Common names found in HM as well as in SM, and their scientific names according to HM and SM (5337 species).
| Common names found in HM as well as in SM, and their scientific names according to HM and SM (5337 species) | ||
|---|---|---|
| Common name HM | Scientific name HM | Scientific name SM |
| Abbott's Booby | Papasula abbotti | Papasula abbotti |
| Abbott's Starling | Cinnyricinclus femoralis | Cinnyricinclus femoralis |
| Abdim's Stork | Ciconia abdimii | Ciconia abdimii |
| Abert's Towhee | Pipilo aberti | Pipilo aberti |
| Abyssinian Catbird | Parophasma galinieri | Parophasma galinieri |
| Abyssinian Longclaw | Macronyx flavicollis | Macronyx flavicollis |
| Abyssinian Roller | Coracias abyssinica | Coracias abyssinica |
| Abyssinian Scimitar-bill | Rhinopomastus minor | Rhinopomastus minor |
| Acadian Flycatcher | Empidonax virescens | Empidonax virescens |
| Acorn Woodpecker | Melanerpes formicivorus | Melanerpes formicivorus |
| Adelaide's Warbler | Dendroica adelaidae | Dendroica adelaidae |
| Adelie Penguin | Pygoscelis adeliae | Pygoscelis adeliae |
| African Barred Owlet | Glaucidium capense | Glaucidium capense |
| African Black Duck | Anas sparsa | Anas sparsa |
| African Black-headed Oriole | Oriolus larvatus | Oriolus larvatus |
| African Broadbill | Smithornis capensis | Smithornis capensis |
| African Crake | Porzana egregia | Crecopsis egregia |
| African Cuckoo | Cuculus gularis | Cuculus gularis |
| African Darter | Anhinga rufa | Anhinga rufa |
| African Emerald Cuckoo | Chrysococcyx cupreus | Chrysococcyx cupreus |
| African Goshawk | Accipiter tachiro | Accipiter tachiro |
| African Grey Hornbill | Tockus nasutus | Tockus nasutus |
| African Hobby | Falco cuvieri | Falco cuvierii |
| African Jacana | Actophilornis africana | Actophilornis africanus |
| African Piculet | Sasia africana | Sasia africana |
| African Pied Wagtail | Motacilla aguimp | Motacilla aguimp |
| African Pipit | Anthus cinnamomeus | Anthus cinnamomeus |
| African Pitta | Pitta angolensis | Pitta angolensis |
| African Quailfinch | Ortygospiza atricollis | Ortygospiza atricollis |
| African Silverbill | Lonchura cantans | Lonchura cantans |
| African Skimmer | Rynchops flavirostris | Rynchops flavirostris |
| African Snipe | Gallinago nigripennis | Gallinago nigripennis |
| African Spoonbill | Platalea alba | Platalea alba |
| African Thrush | Turdus pelios | Turdus pelios |
| African Yellow White-eye | Zosterops senegalensis | Zosterops senegalensis |
| Ahanta Francolin | Francolinus ahantensis | Francolinus ahantensis |
| Akepa | Loxops coccineus | Loxops coccineus |
| Akiapolaau | Hemignathus munroni | Hemignathus wilsoni |
| Alagoas Foliage-gleaner | Philydor novaesi | Philydor novaesi |
| Aldabra Brush-Warbler | Nesillas aldabranus | Nesillas aldabrana |
| Aldabra Drongo | Dicrurus aldabranus | Dicrurus aldabranus |
| Alder Flycatcher | Empidonax alnorum | Empidonax alnorum |
| Aleutian Tern | Sterna aleutica | Sterna aleutica |
| Alexander's Swift | Apus alexandri | Apus alexandri |
| Alexandrine Parakeet | Psittacula eupatria | Psittacula eupatria |
| Allen's Gallinule | Gallinula alleni | Porphyrio alleni |
| Allen's Hummingbird | Selasphorus sasin | Selasphorus sasin |
| Alpine Accentor | Prunella collaris | Prunella collaris |
| Alpine Swift | Tachymarptis melba | Tachymarptis melba |
| Altai Snowcock | Tetraogallus altaicus | Tetraogallus altaicus |
| Altamira Oriole | Icterus gularis | Icterus gularis |
| Amami Thrush | Zoothera major | Zoothera major |
| Amami Woodcock | Scolopax mira | Scolopax mira |
| Amani Sunbird | Anthreptes pallidigaster | Anthreptes pallidigaster |
| Amazilia Hummingbird | Amazilia amazilia | Amazilia amazilia |
| Amazon Kingfisher | Chloroceryle amazona | Chloroceryle amazona |
| Amazonian Antpitta | Hylopezus berlepschi | Hylopezus berlepschi |
| Amazonian Antshrike | Thamnophilus amazonicus | Thamnophilus amazonicus |
| Amazonian Parrotlet | Nannopsittaca dachilleae | Nannopsittaca dachilleae |
| Amazonian Umbrellabird | Cephalopterus ornatus | Cephalopterus ornatus |
| American Avocet | Recurvirostra americana | Recurvirostra americana |
| American Bittern | Botaurus lentiginosus | Botaurus lentiginosus |
| American Coot | Fulica americana | Fulica americana |
| American Crow | Corvus brachyrhynchos | Corvus brachyrhynchos |
| American Goldfinch | Carduelis tristis | Carduelis tristis |
| American Kestrel | Falco sparverius | Falco sparverius |
| American Oystercatcher | Haematopus palliatus | Haematopus palliatus |
| American Redstart | Setophaga ruticilla | Setophaga ruticilla |
| American Robin | Turdus migratorius | Turdus migratorius |
| American Tree Sparrow | Spizella arborea | Spizella arborea |
| American White Pelican | Pelecanus erythrorhynchos | Pelecanus erythrorhynchos |
| American Wigeon | Anas americana | Anas americana |
| American Woodcock | Scolopax minor | Scolopax minor |
| Amethyst Sunbird | Nectarinia amethystina | Nectarinia amethystina |
| Amethyst Woodstar | Calliphlox amethystina | Calliphlox amethystina |
| Amethyst-throated Hummingbird | Lampornis amethystinus | Lampornis amethystinus |
| Amethyst-throated Sunangel | Heliangelus amethysticollis | Heliangelus amethysticollis |
| Amsterdam Island Albatross | Diomedea amsterdamensis | Diomedea amsterdamensis |
| Anambra Waxbill | Estrilda poliopareia | Estrilda poliopareia |
| Anchieta's Barbet | Stactolaema anchietae | Stactolaema anchietae |
| Anchieta's Sunbird | Anthreptes anchietae | Anthreptes anchietae |
| Ancient Murrelet | Synthliboramphus antiquus | Synthliboramphus antiquus |
| Andaman Drongo | Dicrurus andamanensis | Dicrurus andamanensis |
| Andean Avocet | Recurvirostra andina | Recurvirostra andina |
| Andean Condor | Vultur gryphus | Vultur gryphus |
| Andean Emerald | Amazilia franciae | Amazilia franciae |
| Andean Flamingo | Phoenicoparrus andinus | Phoenicopterus andinus |
| Andean Flicker | Colaptes rupicola | Colaptes rupicola |
| Andean Goose | Chloephaga melanoptera | Chloephaga melanoptera |
| Andean Guan | Penelope montagnii | Penelope montagnii |
| Andean Gull | Larus serranus | Larus serranus |
| Andean Hillstar | Oreotrochilus estella | Oreotrochilus estella |
| Andean Lapwing | Vanellus resplendens | Vanellus resplendens |
| Andean Parakeet | Bolborhynchus orbygnesius | Bolborhynchus orbygnesius |
| Andean Potoo | Nyctibius maculosus | Nyctibius maculosus |
| Andean Siskin | Carduelis spinescens | Carduelis spinescens |
| Andean Snipe | Gallinago jamesoni | Gallinago jamesoni |
| Andean Solitaire | Myadestes ralloides | Myadestes ralloides |
| Andean Swallow | Hirundo andecola | Hirundo andecola |
| Andean Swift | Aeronautes andecolus | Aeronautes andecolus |
| Andean Tapaculo | Scytalopus magellanicus | Scytalopus magellanicus |
| Andean Tinamou | Nothoprocta pentlandii | Nothoprocta pentlandii |
| Andean Tit-Spinetail | Leptasthenura andicola | Leptasthenura andicola |
| Angola Cisticola | Cisticola angolensis | Cisticola angolensis |
| Angola Lark | Mirafra angolensis | Mirafra angolensis |
| Angola Swallow | Hirundo angolensis | Hirundo angolensis |
| Anjouan Brush-Warbler | Nesillas longicaudata | Nesillas longicaudata |
| Anjouan Sunbird | Nectarinia comorensis | Nectarinia comorensis |
| Ankober Serin | Serinus ankoberensis | Serinus ankoberensis |
| Anna's Hummingbird | Calypte anna | Calypte anna |
| Annobon White-eye | Zosterops griseovirescens | Zosterops griseovirescens |
| Ansorge's Greenbul | Pycnonotus ansorgei | Andropadus ansorgei |
| Antarctic Petrel | Thalassoica antarctica | Thalassoica antarctica |
| Antarctic Tern | Sterna vittata | Sterna vittata |
| Antillean Crested Hummingbird | Orthorhyncus cristatus | Orthorhyncus cristatus |
| Antillean Euphonia | Euphonia musica | Euphonia musica |
| Antillean Mango | Anthracothorax dominicus | Anthracothorax dominicus |
| Antillean Nighthawk | Chordeiles gundlachii | Chordeiles gundlachii |
| Antillean Piculet | Nesoctites micromegas | Nesoctites micromegas |
| Antillean Siskin | Carduelis dominicensis | Carduelis dominicensis |
| Apapane | Himatione sanguinea | Himatione sanguinea |
| Apical Flycatcher | Myiarchus apicalis | Myiarchus apicalis |
| Aplomado Falcon | Falco femoralis | Falco femoralis |
| Apo Sunbird | Aethopyga boltoni | Aethopyga boltoni |
| Apolinar's Wren | Cistothorus apolinari | Cistothorus apolinari |
| Apurimac Spinetail | Synallaxis courseni | Synallaxis courseni |
| Aquatic Warbler | Acrocephalus paludicola | Acrocephalus paludicola |
| Arabian Babbler | Turdoides squamiceps | Turdoides squamiceps |
| Arabian Bustard | Ardeotis arabs | Ardeotis arabs |
| Arabian Waxbill | Estrilda rufibarba | Estrilda rufibarba |
| Arabian Woodpecker | Picoides dorae | Dendrocopos dorae |
| Araucaria Tit-Spinetail | Leptasthenura setaria | Leptasthenura setaria |
| Archbold's Bowerbird | Archboldia papuensis | Archboldia papuensis |
| Archer's Lark | Heteromirafra archeri | Heteromirafra archeri |
| Arctic Tern | Sterna paradisaea | Sterna paradisaea |
| Arctic Warbler | Phylloscopus borealis | Phylloscopus borealis |
| Argus Bare-eye | Phlegopsis barringeri | Phlegopsis barringeri |
| Armenian Gull | Larus armenicus | Larus armenicus |
| Arrow-marked Babbler | Turdoides jardineii | Turdoides jardineii |
| Ash's Lark | Mirafra ashi | Mirafra ashi |
| Ash-breasted Antbird | Myrmoborus lugubris | Myrmoborus lugubris |
| Ash-browed Spinetail | Certhiaxis curtata | Cranioleuca curtata |
| Ash-throated Casiornis | Casiornis fusca | Casiornis fusca |
| Ash-throated Flycatcher | Myiarchus cinerascens | Myiarchus cinerascens |
| Ash-throated Gnateater | Conopophaga peruviana | Conopophaga peruviana |
| Ash-winged Antwren | Terenura spodioptila | Terenura spodioptila |
| Ashy Antwren | Myrmotherula grisea | Myrmotherula grisea |
| Ashy Bulbul | Hypsipetes flavalus | Hemixos flavala |
| Ashy Cisticola | Cisticola cinereola | Cisticola cinereolus |
| Ashy Drongo | Dicrurus leucophaeus | Dicrurus leucophaeus |
| Ashy Minivet | Pericrocotus divaricatus | Pericrocotus divaricatus |
| Ashy Prinia | Prinia socialis | Prinia socialis |
| Ashy Starling | Cosmopsarus unicolor | Cosmopsarus unicolor |
| Ashy-bellied White-eye | Zosterops citrinella | Zosterops citrinellus |
| Ashy-breasted Flycatcher | Muscicapa randi | Muscicapa randi |
| Ashy-crowned Sparrow-Lark | Eremopterix grisea | Eremopterix grisea |
| Ashy-headed Goose | Chloephaga poliocephala | Chloephaga poliocephala |
| Ashy-headed Greenlet | Hylophilus pectoralis | Hylophilus pectoralis |
| Ashy-headed Tyrannulet | Phyllomyias cinereiceps | Phyllomyias cinereiceps |
| Ashy-tailed Swift | Chaetura andrei | Chaetura andrei |
| Ashy-throated Parrotbill | Paradoxornis alphonsianus | Paradoxornis alphonsianus |
| Asian Emerald Cuckoo | Chalcites maculatus | Chrysococcyx maculatus |
| Asian Golden Weaver | Ploceus hypoxanthus | Ploceus hypoxanthus |
| Asian Pied Starling | Sturnus contra | Sturnus contra |
| Atitlan Grebe | Podilymbus gigas | Podilymbus gigas |
| Atlantic Puffin | Fratercula arctica | Fratercula arctica |
| Audouin's Gull | Larus audouinii | Larus audouinii |
| Audubon's Oriole | Icterus graduacauda | Icterus graduacauda |
| Audubon's Shearwater | Puffinus lherminieri | Puffinus lherminieri |
| Augur Buzzard | Buteo augur | Buteo augur |
| Austral Blackbird | Curaeus curaeus | Curaeus curaeus |
| Austral Canastero | Thripophaga anthoides | Asthenes anthoides |
| Austral Rail | Rallus antarcticus | Rallus antarcticus |
| Austral Thrush | Turdus falcklandii | Turdus falcklandii |
| Australasian Pipit | Anthus novaeseelandiae | Anthus novaeseelandiae |
| Australian Bustard | Choriotis australis | Ardeotis australis |
| Australian Darter | Anhinga novaehollandiae | Anhinga novaehollandiae |
| Australian Gannet | Morus serrator | Morus serrator |
| Australian Hobby | Falco longipennis | Falco longipennis |
| Australian Kestrel | Falco cenchroides | Falco cenchroides |
| Australian Koel | Eudynamys cyanocephela | Eudynamys cyanocephala |
| Australian Pelican | Pelecanus conspicillatus | Pelecanus conspicillatus |
| Australian Pratincole | Stiltia isabella | Stiltia isabella |
| Australian Raven | Corvus coronoides | Corvus coronoides |
| Australian Shelduck | Tadorna tadornoides | Tadorna tadornoides |
| Australian Swiftlet | Aerodramus terraereginae | Collocalia terraereginae |
| Azara's Spinetail | Synallaxis azarae | Synallaxis azarae |
| Aztec Thrush | Ridgwayia pinicola | Zoothera pinicola |
| Azure Gallinule | Gallinula flavirostris | Porphyrio flavirostris |
| Azure Jay | Cyanocorax caeruleus | Cyanocorax caeruleus |
| Azure Kingfisher | Alcedo azureus | Alcedo azurea |
| Azure Tit | Parus cyanus | Parus cyanus |
| Azure-hooded Jay | Cyanolyca cucullata | Cyanolyca cucullata |
| Azure-naped Jay | Cyanocorax heilprini | Cyanocorax heilprini |
| Azure-rumped Tanager | Tangara cabanisi | Tangara cabanisi |
| Azure-shouldered Tanager | Thraupis cyanoptera | Thraupis cyanoptera |
| Azure-winged Magpie | Cyanopica cyana | Cyanopica cyana |
| Bachman's Sparrow | Aimophila aestivalis | Aimophila aestivalis |
| Bachman's Warbler | Vermivora bachmanii | Vermivora bachmanii |
| Baer's Pochard | Aythya baeri | Aythya baeri |
| Baglafecht Weaver | Ploceus baglafecht | Ploceus baglafecht |
| Bagobo Babbler | Trichastoma woodi | Trichastoma woodi |
| Bahama Mockingbird | Mimus gundlachii | Mimus gundlachii |
| Bahama Swallow | Tachycineta cyaneoviridis | Tachycineta cyaneoviridis |
| Bahama Woodstar | Philodice evelynae | Calliphlox evelynae |
| Bahama Yellowthroat | Geothlypis rostrata | Geothlypis rostrata |
| Baikal Teal | Anas formosa | Anas formosa |
| Baillon's Crake | Porzana pusilla | Porzana pusilla |
| Baird's Flycatcher | Myiodynastes bairdi | Myiodynastes bairdii |
| Baird's Sandpiper | Calidris bairdii | Calidris bairdii |
| Baird's Sparrow | Ammodramus bairdii | Ammodramus bairdii |
| Baird's Trogon | Trogon bairdii | Trogon bairdii |
| Baka Indigobird | Vidua larvaticola | Vidua larvaticola |
| Bald Ibis | Geronticus calvus | Geronticus calvus |
| Bald-faced Rail | Eulabeornis rosenbergii | Gymnocrex rosenbergii |
| Bamboo Antshrike | Cymbilaimus sanctaemariae | Cymbilaimus sanctaemariae |
| Bamboo Woodpecker | Gecinulus grantia | Gecinulus viridis |
| Bamenda Apalis | Apalis bamendae | Apalis bamendae |
| Bananal Antbird | Cercomacra ferdinandi | Cercomacra ferdinandi |
| Bananaquit | Coereba flaveola | Coereba flaveola |
| Band-bellied Crake | Rallina paykullii | Porzana paykullii |
| Band-bellied Owl | Pulsatrix melanota | Pulsatrix melanota |
| Band-rumped Swift | Chaetura spinicauda | Chaetura spinicauda |
| Band-tailed Antshrike | Sakesphorus melanothorax | Sakesphorus melanothorax |
| Band-tailed Antwren | Myrmotherula urosticta | Myrmotherula urosticta |
| Band-tailed Barbthroat | Threnetes ruckeri | Threnetes ruckeri |
| Band-tailed Earthcreeper | Eremobius phoenicurus | Eremobius phoenicurus |
| Band-tailed Fruiteater | Pipreola intermedia | Pipreola intermedia |
| Band-tailed Guan | Penelope argyrotis | Penelope argyrotis |
| Band-tailed Gull | Larus belcheri | Larus belcheri |
| Band-tailed Manakin | Pipra fasciicauda | Pipra fasciicauda |
| Band-tailed Nighthawk | Nyctiprogne leucopyga | Nyctiprogne leucopyga |
| Band-tailed Oropendola | Psarocolius latirostris | Ocyalus latirostris |
| Band-tailed Pigeon | Columba fasciata | Columba fasciata |
| Band-tailed Seedeater | Catamenia analis | Catamenia analis |
| Band-winged Nightjar | Caprimulgus longirostris | Caprimulgus longirostris |
| Banded Barbet | Lybius undatus | Lybius undatus |
| Banded Bay Cuckoo | Penthoceryx sonneratii | Cacomantis sonneratii |
| Banded Broadbill | Eurylaimus javanicus | Eurylaimus javanicus |
| Banded Cotinga | Cotinga maculata | Cotinga maculata |
| Banded Honeyeater | Cissomela pectoralis | Certhionyx pectoralis |
| Banded Kingfisher | Lacedo pulchella | Lacedo pulchella |
| Banded Martin | Riparia cincta | Riparia cincta |
| Banded Prinia | Prinia bairdii | Prinia bairdii |
| Banded Quail | Philortyx fasciatus | Philortyx fasciatus |
| Banded Stilt | Cladorhynchus leucocephalus | Cladorhynchus leucocephalus |
| Banded Whiteface | Aphelocephala nigricincta | Aphelocephala nigricincta |
| Banggai Crow | Corvus unicolor | Corvus unicolor |
| Bank Cormorant | Phalacrocorax neglectus | Phalacrocorax neglectus |
| Bannerman's Sunbird | Nectarinia bannermani | Nectarinia bannermani |
| Bannerman's Turaco | Tauraco bannermani | Tauraco bannermani |
| Bannerman's Weaver | Ploceus bannermani | Ploceus bannermani |
| Bar-bellied Woodcreeper | Hylexetastes stresemanni | Hylexetastes stresemanni |
| Bar-bellied Woodpecker | Veniliornis nigriceps | Veniliornis nigriceps |
| Bar-breasted Honeyeater | Ramsayornis fasciatus | Ramsayornis fasciatus |
| Bar-breasted Piculet | Picumnus aurifrons | Picumnus aurifrons |
| Bar-crested Antshrike | Thamnophilus multistriatus | Thamnophilus multistriatus |
| Bar-headed Goose | Anser indicus | Anser indicus |
| Bar-shouldered Dove | Geopelia humeralis | Geopelia humeralis |
| Bar-tailed Godwit | Limosa lapponica | Limosa lapponica |
| Bar-tailed Lark | Ammomanes cincturus | Ammomanes cincturus |
| Bar-tailed Trogon | Apaloderma vittatum | Apaloderma vittatum |
| Bar-throated Apalis | Apalis thoracica | Apalis thoracica |
| Bar-winged Cinclodes | Cinclodes fuscus | Cinclodes fuscus |
| Bar-winged Oriole | Icterus maculialatus | Icterus maculialatus |
| Bar-winged Prinia | Prinia familiaris | Prinia familiaris |
| Bar-winged Weaver | Ploceus angolensis | Ploceus angolensis |
| Barau's Petrel | Pterodroma baraui | Pterodroma baraui |
| Barbary Falcon | Falco pelegrinoides | Falco pelegrinoides |
| Barbary Partridge | Alectoris barbara | Alectoris barbara |
| Bare-cheeked Babbler | Turdoides gymnogenys | Turdoides gymnogenys |
| Bare-cheeked Trogon | Apaloderma aequatoriale | Apaloderma aequatoriale |
| Bare-eyed Pigeon | Columba corensis | Columba corensis |
| Bare-eyed Rail | Eulabeornis plumbeiventris | Gymnocrex plumbeiventris |
| Bare-eyed Thrush | Turdus nudigenis | Turdus tephronotus |
| Bare-faced Curassow | Crax fasciolata | Crax fasciolata |
| Bare-necked Fruitcrow | Gymnoderus foetidus | Gymnoderus foetidus |
| Bare-necked Umbrellabird | Cephalopterus glabricollis | Cephalopterus glabricollis |
| Bare-throated Bellbird | Procnias nudicollis | Procnias nudicollis |
| Bare-throated Whistler | Pachycephala nudigula | Pachycephala nudigula |
| Barking Owl | Ninox connivens | Ninox connivens |
| Barn Owl | Tyto alba | Tyto alba |
| Barn Swallow | Hirundo rustica | Hirundo rustica |
| Barnacle Goose | Branta leucopsis | Branta leucopsis |
| Barred Antshrike | Thamnophilus doliatus | Thamnophilus doliatus |
| Barred Becard | Pachyramphus versicolor | Pachyramphus versicolor |
| Barred Fruiteater | Pipreola arcuata | Pipreola arcuata |
| Barred Hawk | Leucopternis princeps | Leucopternis princeps |
| Barred Honeyeater | Phylidonyris undulata | Phylidonyris undulata |
| Barred Owl | Strix varia | Strix varia |
| Barred Owlet-Nightjar | Aegotheles bennettii | Aegotheles bennettii |
| Barred Parakeet | Bolborhynchus lineola | Bolborhynchus lineola |
| Barred Puffbird | Nystalus radiatus | Nystalus radiatus |
| Barred Rail | Rallus torquatus | Gallirallus torquatus |
| Barred Tinamou | Crypturellus casiquiare | Crypturellus casiquiare |
| Barred Warbler | Sylvia nisoria | Sylvia nisoria |
| Barred Woodcreeper | Dendrocolaptes certhia | Dendrocolaptes certhia |
| Barrow's Goldeneye | Bucephala islandica | Bucephala islandica |
| Bartlett's Tinamou | Crypturellus bartletti | Crypturellus bartletti |
| Bat Falcon | Falco rufigularis | Falco rufigularis |
| Bat Hawk | Macheiramphus alcinus | Macheiramphus alcinus |
| Bateleur | Terathopius ecaudatus | Terathopius ecaudatus |
| Bates's Nightjar | Caprimulgus batesi | Caprimulgus batesi |
| Bates's Weaver | Ploceus batesi | Ploceus batesi |
| Baudo Guan | Penelope ortoni | Penelope ortoni |
| Bay Coucal | Centropus celebensis | Centropus celebensis |
| Bay Woodpecker | Blythipicus pyrrhotis | Blythipicus pyrrhotis |
| Bay Wren | Thryothorus nigricapillus | Thryothorus nigricapillus |
| Bay-backed Shrike | Lanius vittatus | Lanius vittatus |
| Bay-breasted Warbler | Dendroica castanea | Dendroica castanea |
| Bay-headed Tanager | Tangara gyrola | Tangara gyrola |
| Bay-ringed Tyrannulet | Phylloscartes sylviolus | Phylloscartes sylviolus |
| Bay-vented Cotinga | Ampelion sclateri | Doliornis sclateri |
| Bay-winged Cowbird | Molothrus badius | Molothrus badius |
| Baya Weaver | Ploceus philippinus | Ploceus philippinus |
| Bean Goose | Anser fabalis | Anser fabalis |
| Bearded Barbet | Lybius dubius | Lybius dubius |
| Bearded Bellbird | Procnias averano | Procnias averano |
| Bearded Bulbul | Criniger barbatus | Criniger barbatus |
| Bearded Guan | Penelope barbata | Penelope barbata |
| Bearded Helmetcrest | Oxypogon guerinii | Oxypogon guerinii |
| Bearded Mountaineer | Oreonympha nobilis | Oreonympha nobilis |
| Bearded Tachuri | Polystictus pectoralis | Polystictus pectoralis |
| Bearded Woodpecker | Dendropicos namaquus | Dendropicos namaquus |
| Beautiful Hummingbird | Calothorax pulcher | Calothorax pulcher |
| Beautiful Jay | Cyanolyca pulchra | Cyanolyca pulchra |
| Beautiful Nuthatch | Sitta formosa | Sitta formosa |
| Beautiful Rosefinch | Carpodacus pulcherrimus | Carpodacus pulcherrimus |
| Beautiful Sibia | Heterophasia pulchella | Heterophasia pulchella |
| Beautiful Sunbird | Nectarinia pulchella | Nectarinia pulchella |
| Beautiful Treerunner | Margarornis bellulus | Margarornis bellulus |
| Bee Hummingbird | Calypte helenae | Mellisuga helenae |
| Belford's Melidectes | Melidectes belfordi | Melidectes belfordi |
| Bell Miner | Manorina melanophrys | Manorina melanophrys |
| Bell's Vireo | Vireo bellii | Vireo bellii |
| Belted Flycatcher | Xenotriccus callizonus | Xenotriccus callizonus |
| Belted Kingfisher | Megaceryle alcyon | Megaceryle alcyon |
| Bengal Florican | Houbaropsis bengalensis | Eupodotis bengalensis |
| Bennett's Woodpecker | Campethera bennettii | Campethera bennettii |
| Berlepsch's Canastero | Thripophaga berlepschi | Asthenes berlepschi |
| Berlepsch's Tinamou | Crypturellus berlepschi | Crypturellus berlepschi |
| Bernier's Vanga | Oriolia bernieri | Oriolia bernieri |
| Bertrand's Weaver | Ploceus bertrandi | Ploceus bertrandi |
| Beryl-spangled Tanager | Tangara nigroviridis | Tangara nigroviridis |
| Berylline Hummingbird | Amazilia beryllina | Amazilia beryllina |
| Bewick's Wren | Thryomanes bewickii | Thryomanes bewickii |
| Biak Monarch | Monarcha brehmii | Monarcha brehmii |
| Biak White-eye | Zosterops mysorensis | Zosterops mysorensis |
| Bimaculated Lark | Melanocorypha bimaculata | Melanocorypha bimaculata |
| Biscutate Swift | Streptoprocne biscutatus | Streptoprocne biscutata |
| Black Antbird | Cercomacra serva | Cercomacra serva |
| Black Antshrike | Thamnophilus nigriceps | Thamnophilus nigriceps |
| Black Baza | Aviceda leuphotes | Aviceda leuphotes |
| Black Berrypecker | Melanocharis nigra | Melanocharis nigra |
| Black Bittern | Ixobrychus flavicollis | Dupetor flavicollis |
| Black Bulbul | Hypsipetes leucocephalus | Hypsipetes leucocephalus |
| Black Bushbird | Neoctantes niger | Neoctantes niger |
| Black Bustard | Eupodotis afra | Eupodotis afra |
| Black Catbird | Melanoptila glabrirostris | Melanoptila glabrirostris |
| Black Coucal | Centropus toulou | Centropus grillii |
| Black Cuckoo | Cuculus clamosus | Cuculus clamosus |
| Black Curassow | Crax alector | Crax alector |
| Black Currawong | Strepera fuliginosa | Strepera fuliginosa |
| Black Drongo | Dicrurus macrocercus | Dicrurus macrocercus |
| Black Dwarf Hornbill | Tockus hartlaubi | Tockus hartlaubi |
| Black Falcon | Falco subniger | Falco subniger |
| Black Fantail | Rhipidura atra | Rhipidura atra |
| Black Grouse | Tetrao tetrix | Tetrao tetrix |
| Black Guan | Chamaepetes unicolor | Chamaepetes unicolor |
| Black Guillemot | Cepphus grylle | Cepphus grylle |
| Black Guineafowl | Phasidus niger | Agelastes niger |
| Black Harrier | Circus maurus | Circus maurus |
| Black Heron | Egretta ardesiaca | Egretta ardesiaca |
| Black Hornbill | Anthracoceros malayanus | Anthracoceros malayanus |
| Black Inca | Coeligena prunellei | Coeligena prunellei |
| Black Jacobin | Melanotrochilus fuscus | Melanotrochilus fuscus |
| Black Kite | Milvus migrans | Milvus migrans |
| Black Lark | Melanocorypha yeltoniensis | Melanocorypha yeltoniensis |
| Black Lory | Chalcopsitta atra | Chalcopsitta atra |
| Black Manakin | Xenopipo atronitens | Xenopipo atronitens |
| Black Metaltail | Metallura phoebe | Metallura phoebe |
| Black Monarch | Monarcha axillaris | Monarcha axillaris |
| Black Nunbird | Monasa atra | Monasa atra |
| Black Oriole | Oriolus hosii | Oriolus hosii |
| Black Oropendola | Psarocolius guatimozinus | Gymnostinops guatimozinus |
| Black Parrot | Coracopsis nigra | Coracopsis nigra |
| Black Partridge | Francolinus francolinus | Melanoperdix nigra |
| Black Petrel | Procellaria parkinsoni | Procellaria parkinsoni |
| Black Phoebe | Sayornis nigricans | Sayornis nigricans |
| Black Pitohui | Pitohui nigrescens | Pitohui nigrescens |
| Black Redstart | Phoenicurus ochruros | Phoenicurus ochruros |
| Black Scoter | Melanitta nigra | Melanitta nigra |
| Black Shama | Copsychus niger | Copsychus cebuensis |
| Black Sicklebill | Epimachus fastuosus | Epimachus fastuosus |
| Black Siskin | Carduelis atrata | Carduelis atrata |
| Black Skimmer | Rynchops niger | Rynchops niger |
| Black Solitaire | Entomodestes coracinus | Entomodestes coracinus |
| Black Stork | Ciconia nigra | Ciconia nigra |
| Black Sunbird | Nectarinia aspasia | Nectarinia aspasia |
| Black Swan | Cygnus atratus | Cygnus atratus |
| Black Swift | Nephoecetes niger | Cypseloides niger |
| Black Tern | Chlidonias nigra | Chlidonias niger |
| Black Tinamou | Tinamus osgoodi | Tinamus osgoodi |
| Black Turnstone | Arenaria melanocephala | Arenaria melanocephala |
| Black Wheatear | Oenanthe leucura | Oenanthe leucura |
| Black Woodpecker | Dryocopus martius | Dryocopus martius |
| Black-backed Antshrike | Sakesphorus melanonotus | Sakesphorus melanonotus |
| Black-backed Barbet | Lybius minor | Lybius minor |
| Black-backed Forktail | Enicurus immaculatus | Enicurus immaculatus |
| Black-backed Grosbeak | Pheucticus aureoventris | Pheucticus aureoventris |
| Black-backed Puffback | Dryoscopus cubla | Dryoscopus cubla |
| Black-backed Tanager | Tangara peruviana | Tangara peruviana |
| Black-backed Thornbill | Ramphomicron dorsale | Ramphomicron dorsale |
| Black-backed Woodpecker | Picoides arcticus | Picoides arcticus |
| Black-banded Barbet | Megalaima javensis | Megalaima javensis |
| Black-banded Crake | Laterallus fasciatus | Anurolimnas fasciatus |
| Black-banded Flycatcher | Ficedula timorensis | Ficedula timorensis |
| Black-banded Owl | Strix huhula | Strix huhula |
| Black-banded Woodcreeper | Dendrocolaptes picumnus | Dendrocolaptes picumnus |
| Black-bellied Antwren | Formicivora melanogaster | Formicivora melanogaster |
| Black-bellied Bustard | Eupodotis melanogaster | Eupodotis melanogaster |
| Black-bellied Cuckoo | Piaya melanogaster | Piaya melanogaster |
| Black-bellied Gnateater | Conopophaga melanogaster | Conopophaga melanogaster |
| Black-bellied Hummingbird | Eupherusa nigriventris | Eupherusa nigriventris |
| Black-bellied Sandgrouse | Pterocles orientalis | Pterocles orientalis |
| Black-bellied Seedcracker | Pyrenestes ostrinus | Pyrenestes ostrinus |
| Black-bellied Seedeater | Sporophila melanogaster | Sporophila melanogaster |
| Black-bellied Tern | Sterna melanogaster | Sterna acuticauda |
| Black-bellied Thorntail | Popelairia langsdorffi | Popelairia langsdorffi |
| Black-bellied Wren | Thryothorus fasciatoventris | Thryothorus fasciatoventris |
| Black-bibbed Cicadabird | Coracina mindanensis | Coracina mindanensis |
| Black-billed Barbet | Lybius guifsobalito | Lybius guifsobalito |
| Black-billed Capercaillie | Tetrao parvirostris | Tetrao parvirostris |
| Black-billed Cuckoo | Coccyzus erythropthalmus | Coccyzus erythropthalmus |
| Black-billed Flycatcher | Aphanotriccus audax | Aphanotriccus audax |
| Black-billed Magpie | Pica pica | Pica pica |
| Black-billed Scythebill | Campylorhamphus falcularius | Campylorhamphus falcularius |
| Black-billed Sicklebill | Drepanornis albertisi | Epimachus albertisi |
| Black-billed Thrush | Turdus ignobilis | Turdus ignobilis |
| Black-billed Treehunter | Thripadectes melanorhynchus | Thripadectes melanorhynchus |
| Black-billed Turaco | Tauraco schuettii | Tauraco schuettii |
| Black-billed Weaver | Ploceus melanogaster | Ploceus melanogaster |
| Black-bodied Woodpecker | Dryocopus schulzi | Dryocopus schulzi |
| Black-breasted Barbet | Lybius rolleti | Lybius rolleti |
| Black-breasted Hillstar | Oreotrochilus melanogaster | Oreotrochilus melanogaster |
| Black-breasted Puffbird | Notharchus pectoralis | Notharchus pectoralis |
| Black-breasted Puffleg | Eriocnemis nigrivestis | Eriocnemis nigrivestis |
| Black-breasted Thrush | Turdus dissimilis | Turdus dissimilis |
| Black-browed Albatross | Diomedea melanophris | Diomedea melanophris |
| Black-browed Triller | Lalage atrovirens | Lalage atrovirens |
| Black-capped Antwren | Herpsilochmus pileatus | Herpsilochmus atricapillus |
| Black-capped Apalis | Apalis nigriceps | Apalis nigriceps |
| Black-capped Babbler | Pellorneum capistratum | Pellorneum capistratum |
| Black-capped Becard | Pachyramphus marginatus | Pachyramphus marginatus |
| Black-capped Chickadee | Parus atricapillus | Parus atricapillus |
| Black-capped Flycatcher | Empidonax atriceps | Empidonax atriceps |
| Black-capped Foliage-gleaner | Philydor atricapillus | Philydor atricapillus |
| Black-capped Gnatcatcher | Polioptila nigriceps | Polioptila nigriceps |
| Black-capped Hemispingus | Hemispingus atropileus | Hemispingus atropileus |
| Black-capped Kingfisher | Halcyon pileata | Halcyon pileata |
| Black-capped Lory | Lorius lory | Lorius lory |
| Black-capped Petrel | Pterodroma hasitata | Pterodroma hasitata |
| Black-capped Rufous Warbler | Bathmocercus cerviniventris | Bathmocercus cerviniventris |
| Black-capped Siskin | Carduelis atriceps | Carduelis atriceps |
| Black-capped Sparrow | Arremon abeillei | Arremon abeillei |
| Black-capped Speirops | Speirops lugubris | Speirops lugubris |
| Black-capped Swallow | Notiochelidon pileata | Notiochelidon pileata |
| Black-capped Tanager | Tangara heinei | Tangara heinei |
| Black-capped Tinamou | Crypturellus atrocapillus | Crypturellus atrocapillus |
| Black-capped Tyrannulet | Phyllomyias nigrocapillus | Phyllomyias nigrocapillus |
| Black-capped Vireo | Vireo atricapillus | Vireo atricapillus |
| Black-capped White-eye | Zosterops atricapilla | Zosterops atricapillus |
| Black-casqued Hornbill | Ceratogymna atrata | Ceratogymna atrata |
| Black-cheeked Ant-Tanager | Habia atrimaxillaris | Habia atrimaxillaris |
| Black-cheeked Gnateater | Conopophaga melanops | Conopophaga melanops |
| Black-cheeked Lovebird | Agapornis nigrigenis | Agapornis nigrigenis |
| Black-cheeked Warbler | Basileuterus melanogenys | Basileuterus melanogenys |
| Black-cheeked Waxbill | Estrilda erythronotos | Estrilda erythronotos |
| Black-cheeked Woodpecker | Melanerpes pucherani | Melanerpes pucherani |
| Black-chested Honeyeater | Lichmera notabilis | Lichmera notabilis |
| Black-chested Jay | Cyanocorax affinis | Cyanocorax affinis |
| Black-chested Prinia | Prinia flavicans | Prinia flavicans |
| Black-chested Sparrow | Aimophila humeralis | Aimophila humeralis |
| Black-chested Tyrant | Poecilotriccus andrei | Taeniotriccus andrei |
| Black-chinned Honeyeater | Melithreptus gularis | Melithreptus gularis |
| Black-chinned Hummingbird | Archilochus alexandri | Archilochus alexandri |
| Black-chinned Monarch | Monarcha boanensis | Monarcha boanensis |
| Black-chinned Siskin | Carduelis barbata | Carduelis barbata |
| Black-chinned Sparrow | Spizella atrogularis | Spizella atrogularis |
| Black-chinned Weaver | Ploceus nigrimentum | Ploceus nigrimentum |
| Black-chinned Yuhina | Yuhina nigrimenta | Yuhina nigrimenta |
| Black-collared Apalis | Apalis pulchra | Apalis pulchra |
| Black-collared Barbet | Lybius torquatus | Lybius torquatus |
| Black-collared Bulbul | Neolestes torquatus | Neolestes torquatus |
| Black-collared Hawk | Busarellus nigricollis | Busarellus nigricollis |
| Black-collared Lovebird | Agapornis swinderniana | Agapornis swindernianus |
| Black-collared Starling | Sturnus nigricollis | Sturnus nigricollis |
| Black-collared Swallow | Atticora melanoleuca | Atticora melanoleuca |
| Black-cowled Oriole | Icterus dominicensis | Icterus dominicensis |
| Black-cowled Saltator | Saltator nigriceps | Saltator nigriceps |
| Black-crested Antshrike | Sakesphorus canadensis | Sakesphorus canadensis |
| Black-crested Bulbul | Pycnonotus melanicterus | Pycnonotus melanicterus |
| Black-crested Coquette | Paphosia helenae | Lophornis helenae |
| Black-crested Finch | Lophospingus pusillus | Lophospingus pusillus |
| Black-crested Tit | Parus rubidiventris | Parus melanolophus |
| Black-crested Titmouse | Parus atricristatus | Parus atricristatus |
| Black-crested Warbler | Basileuterus nigrocristatus | Basileuterus nigrocristatus |
| Black-crowned Antpitta | Pittasoma michleri | Pittasoma michleri |
| Black-crowned Monjita | Xolmis coronata | Xolmis coronata |
| Black-crowned Sparrow-Lark | Eremopterix nigriceps | Eremopterix nigriceps |
| Black-crowned Tityra | Tityra inquisitor | Tityra inquisitor |
| Black-crowned Waxbill | Estrilda nonnula | Estrilda nonnula |
| Black-eared Cuckoo | Misocallus osculans | Chrysococcyx osculans |
| Black-eared Fairy | Heliothryx aurita | Heliothryx aurita |
| Black-eared Hemispingus | Hemispingus melanotis | Hemispingus melanotis |
| Black-eared Oriole | Oriolus bouroensis | Oriolus bouroensis |
| Black-eared Seedeater | Serinus mennelli | Serinus mennelli |
| Black-eared Sparrow-Lark | Eremopterix australis | Eremopterix australis |
| Black-eared Wheatear | Oenanthe hispanica | Oenanthe hispanica |
| Black-faced Antbird | Myrmoborus myotherinus | Myrmoborus myotherinus |
| Black-faced Bunting | Emberiza spodocephala | Emberiza spodocephala |
| Black-faced Canary | Serinus capistratus | Serinus capistratus |
| Black-faced Cormorant | Phalacrocorax fuscescens | Phalacrocorax fuscescens |
| Black-faced Cotinga | Conioptilon mcilhennyi | Conioptilon mcilhennyi |
| Black-faced Coucal | Centropus melanops | Centropus melanops |
| Black-faced Dacnis | Dacnis lineata | Dacnis lineata |
| Black-faced Grassquit | Tiaris bicolor | Tiaris bicolor |
| Black-faced Grosbeak | Caryothraustes poliogaster | Caryothraustes poliogaster |
| Black-faced Hawk | Leucopternis melanops | Leucopternis melanops |
| Black-faced Ibis | Theristicus melanopis | Theristicus melanopis |
| Black-faced Pitta | Pitta anerythra | Pitta anerythra |
| Black-faced Rufous Warbler | Bathmocercus rufus | Bathmocercus rufus |
| Black-faced Sandgrouse | Pterocles decoratus | Pterocles decoratus |
| Black-faced Sheathbill | Chionis minor | Chionis minor |
| Black-faced Solitaire | Myadestes melanops | Myadestes melanops |
| Black-faced Spoonbill | Platalea minor | Platalea minor |
| Black-faced Tanager | Schistochlamys melanopis | Schistochlamys melanopis |
| Black-faced Waxbill | Estrilda nigriloris | Estrilda nigriloris |
| Black-footed Albatross | Diomedea nigripes | Diomedea nigripes |
| Black-fronted Nunbird | Monasa nigrifrons | Monasa nigrifrons |
| Black-fronted Tern | Sterna albostriata | Chlidonias albostriatus |
| Black-fronted Tyrannulet | Phylloscartes nigrifrons | Phylloscartes nigrifrons |
| Black-girdled Barbet | Capito dayi | Capito dayi |
| Black-goggled Tanager | Trichothraupis melanops | Trichothraupis melanops |
| Black-headed Antbird | Percnostola rufifrons | Percnostola rufifrons |
| Black-headed Apalis | Apalis melanocephala | Apalis melanocephala |
| Black-headed Berryeater | Carpornis melanocephalus | Carpornis melanocephalus |
| Black-headed Bulbul | Pycnonotus atriceps | Pycnonotus atriceps |
| Black-headed Bunting | Emberiza melanocephala | Emberiza melanocephala |
| Black-headed Canary | Serinus alario | Serinus alario |
| Black-headed Duck | Heteronetta atricapilla | Heteronetta atricapilla |
| Black-headed Gonolek | Laniarius erythrogaster | Laniarius erythrogaster |
| Black-headed Greenfinch | Carduelis spinoides | Carduelis ambigua |
| Black-headed Grosbeak | Pheucticus melanocephalus | Pheucticus melanocephalus |
| Black-headed Hemispingus | Hemispingus verticalis | Hemispingus verticalis |
| Black-headed Heron | Ardea melanocephala | Ardea melanocephala |
| Black-headed Saltator | Saltator atriceps | Saltator atriceps |
| Black-headed Sibia | Heterophasia melanoleuca | Heterophasia melanoleuca |
| Black-headed Tanager | Tangara cyanoptera | Tangara cyanoptera |
| Black-headed Trogon | Trogon melanocephalus | Trogon melanocephalus |
| Black-headed Waxbill | Estrilda atricapilla | Estrilda atricapilla |
| Black-headed Weaver | Ploceus melanocephalus | Ploceus melanocephalus |
| Black-headed Woodpecker | Picus erythropygius | Picus erythropygius |
| Black-hooded Antshrike | Thamnophilus bridgesi | Thamnophilus bridgesi |
| Black-hooded Antwren | Formicivora erythronotos | Formicivora erythronotos |
| Black-hooded Sunbeam | Aglaeactis pamela | Aglaeactis pamela |
| Black-hooded Thrush | Turdus olivater | Turdus olivater |
| Black-legged Dacnis | Dacnis nigripes | Dacnis nigripes |
| Black-legged Kittiwake | Rissa tridactyla | Rissa tridactyla |
| Black-legged Seriema | Chunga burmeisteri | Chunga burmeisteri |
| Black-lored Babbler | Turdoides melanops | Turdoides melanops |
| Black-lored Parrot | Tanygnathus gramineus | Tanygnathus gramineus |
| Black-mandibled Toucan | Ramphastos ambiguus | Ramphastos ambiguus |
| Black-mantled Goshawk | Accipiter melanochlamys | Accipiter melanochlamys |
| Black-masked Finch | Coryphaspiza melanotis | Coryphaspiza melanotis |
| Black-naped Oriole | Oriolus chinensis | Oriolus chinensis |
| Black-naped Tern | Sterna sumatrana | Sterna sumatrana |
| Black-necked Aracari | Pteroglossus aracari | Pteroglossus aracari |
| Black-necked Cisticola | Cisticola eximia | Cisticola eximius |
| Black-necked Crane | Grus nigricollis | Grus nigricollis |
| Black-necked Eremomela | Eremomela atricollis | Eremomela atricollis |
| Black-necked Grebe | Podiceps nigricollis | Podiceps nigricollis |
| Black-necked Stilt | Himantopus mexicanus | Himantopus mexicanus |
| Black-necked Stork | Ephippiorhynchus asiaticus | Ephippiorhynchus asiaticus |
| Black-necked Swan | Cygnus melanocoryphus | Cygnus melanocorypha |
| Black-necked Weaver | Ploceus nigricollis | Ploceus nigricollis |
| Black-necked Woodpecker | Colaptes atricollis | Colaptes atricollis |
| Black-polled Yellowthroat | Geothlypis speciosa | Geothlypis speciosa |
| Black-rumped Waxbill | Estrilda troglodytes | Estrilda troglodytes |
| Black-shouldered Kite | Elanus caeruleus | Elanus axillaris |
| Black-shouldered Nightjar | Caprimulgus nigriscapularis | Caprimulgus nigriscapularis |
| Black-sided Flowerpecker | Dicaeum celebicum | Dicaeum monticolum |
| Black-spotted Barbet | Capito niger | Capito niger |
| Black-spotted Bare-eye | Phlegopsis nigromaculata | Phlegopsis nigromaculata |
| Black-streaked Puffbird | Malacoptila fulvogularis | Malacoptila fulvogularis |
| Black-striped Sparrow | Arremonops conirostris | Arremonops conirostris |
| Black-striped Woodcreeper | Xiphorhynchus lachrymosus | Xiphorhynchus lachrymosus |
| Black-tailed Antbird | Myrmoborus melanurus | Myrmoborus melanurus |
| Black-tailed Flycatcher | Myiobius atricaudus | Myiobius atricaudus |
| Black-tailed Gnatcatcher | Polioptila melanura | Polioptila melanura |
| Black-tailed Godwit | Limosa limosa | Limosa limosa |
| Black-tailed Tityra | Tityra cayana | Tityra cayana |
| Black-tailed Trainbearer | Lesbia victoriae | Lesbia victoriae |
| Black-tailed Treecreeper | Climacteris melanura | Climacteris melanura |
| Black-tailed Trogon | Trogon melanurus | Trogon melanurus |
| Black-tailed Waxbill | Estrilda perreini | Estrilda perreini |
| Black-thighed Falconet | Microhierax fringillarius | Microhierax fringillarius |
| Black-thighed Grosbeak | Pheucticus tibialis | Pheucticus tibialis |
| Black-thighed Puffleg | Eriocnemis derbyi | Eriocnemis derbyi |
| Black-throated Accentor | Prunella atrogularis | Prunella atrogularis |
| Black-throated Antbird | Myrmeciza atrothorax | Myrmeciza atrothorax |
| Black-throated Antshrike | Frederickena viridis | Frederickena viridis |
| Black-throated Apalis | Apalis jacksoni | Apalis jacksoni |
| Black-throated Barbet | Megalaima eximia | Tricholaema melanocephala |
| Black-throated Blue Robin | Erithacus obscurus | Luscinia obscura |
| Black-throated Blue Warbler | Dendroica caerulescens | Dendroica caerulescens |
| Black-throated Brilliant | Heliodoxa schreibersii | Heliodoxa schreibersii |
| Black-throated Coucal | Centropus leucogaster | Centropus leucogaster |
| Black-throated Green Warbler | Dendroica virens | Dendroica virens |
| Black-throated Grey Warbler | Dendroica nigrescens | Dendroica nigrescens |
| Black-throated Grosbeak | Pitylus fuliginosus | Pitylus fuliginosus |
| Black-throated Honeyeater | Meliphaga subfrenata | Lichenostomus subfrenatus |
| Black-throated Jay | Cyanolyca pumilo | Cyanolyca pumilo |
| Black-throated Malimbe | Malimbus cassini | Malimbus cassini |
| Black-throated Mango | Anthracothorax nigricollis | Anthracothorax nigricollis |
| Black-throated Robin | Poecilodryas albonotata | Poecilodryas albonotata |
| Black-throated Saltator | Saltator atricollis | Saltator atricollis |
| Black-throated Shrike-Tanager | Lanio aurantius | Lanio aurantius |
| Black-throated Shrikebill | Clytorhynchus nigrogularis | Clytorhynchus nigrogularis |
| Black-throated Sparrow | Amphispiza bilineata | Amphispiza bilineata |
| Black-throated Spinetail | Synallaxis castanea | Synallaxis castanea |
| Black-throated Sunbird | Aethopyga saturata | Aethopyga saturata |
| Black-throated Thistletail | Schizoeaca harterti | Schizoeaca harterti |
| Black-throated Trogon | Trogon rufus | Trogon rufus |
| Black-throated Wattle-eye | Platysteira peltata | Platysteira peltata |
| Black-throated Wren | Thryothorus atrogularis | Thryothorus atrogularis |
| Black-tipped Cotinga | Carpodectes hopkei | Carpodectes hopkei |
| Black-tipped Monarch | Monarcha loricatus | Monarcha loricatus |
| Black-vented Oriole | Icterus wagleri | Icterus wagleri |
| Black-vented Shearwater | Puffinus opisthomelas | Puffinus opisthomelas |
| Black-whiskered Vireo | Vireo altiloquus | Vireo altiloquus |
| Black-winged Lory | Eos cyanogenia | Eos cyanogenia |
| Black-winged Lovebird | Agapornis taranta | Agapornis taranta |
| Black-winged Monarch | Monarcha frater | Monarcha frater |
| Black-winged Oriole | Oriolus nigripennis | Oriolus nigripennis |
| Black-winged Parrot | Hapalopsittaca melanotis | Hapalopsittaca melanotis |
| Black-winged Petrel | Pterodroma nigripennis | Pterodroma nigripennis |
| Black-winged Pratincole | Glareola nordmanni | Glareola nordmanni |
| Black-winged Saltator | Saltator atripennis | Saltator atripennis |
| Black-winged Starling | Sturnus melanopterus | Sturnus melanopterus |
| Black-winged Stilt | Himantopus himantopus | Himantopus himantopus |
| Blackburnian Warbler | Dendroica fusca | Dendroica fusca |
| Blackcap | Sylvia atricapilla | Sylvia atricapilla |
| Blackcap Babbler | Turdoides reinwardtii | Turdoides reinwardtii |
| Blackish Antbird | Cercomacra nigrescens | Cercomacra nigrescens |
| Blackish Cinclodes | Cinclodes antarcticus | Cinclodes antarcticus |
| Blackish Nightjar | Caprimulgus nigrescens | Caprimulgus nigrescens |
| Blackish Oystercatcher | Haematopus ater | Haematopus ater |
| Blackish Pewee | Contopus nigrescens | Contopus nigrescens |
| Blackish Rail | Rallus nigricans | Pardirallus nigricans |
| Blackish-blue Seedeater | Amaurospiza moesta | Amaurospiza moesta |
| Blackish-grey Antshrike | Thamnophilus nigrocinereus | Thamnophilus nigrocinereus |
| Blackish-headed Spinetail | Synallaxis tithys | Synallaxis tithys |
| Blackpoll Warbler | Dendroica striata | Dendroica striata |
| Blackstart | Cercomela melanura | Cercomela melanura |
| Blanford's Lark | Calandrella blanfordi | Calandrella blanfordi |
| Blond-crested Woodpecker | Celeus flavescens | Celeus flavescens |
| Blood Pheasant | Ithaginis cruentus | Ithaginis cruentus |
| Blood-breasted Flowerpecker | Dicaeum sanguinolentum | Dicaeum sanguinolentum |
| Blossom-headed Parakeet | Psittacula roseata | Psittacula roseata |
| Blossomcrown | Anthocephala floriceps | Anthocephala floriceps |
| Blue Bunting | Cyanocompsa parellina | Cyanocompsa parellina |
| Blue Bustard | Eupodotis caerulescens | Eupodotis caerulescens |
| Blue Cotinga | Cotinga nattererii | Cotinga nattererii |
| Blue Dacnis | Dacnis cayana | Dacnis cayana |
| Blue Eared-Pheasant | Crossoptilon auritum | Crossoptilon auritum |
| Blue Fantail | Rhipidura superciliaris | Rhipidura superciliaris |
| Blue Grosbeak | Guiraca caerulea | Guiraca caerulea |
| Blue Grouse | Dendragapus obscurus | Dendragapus obscurus |
| Blue Jay | Cyanocitta cristata | Cyanocitta cristata |
| Blue Mockingbird | Melanotis caerulescens | Melanotis caerulescens |
| Blue Mountain Vireo | Vireo osburni | Vireo osburni |
| Blue Petrel | Halobaena caerulea | Halobaena caerulea |
| Blue Pitta | Pitta cyanea | Pitta cyanea |
| Blue Seedeater | Amaurospiza concolor | Amaurospiza concolor |
| Blue Swallow | Hirundo atrocaerulea | Hirundo atrocaerulea |
| Blue Tit | Parus caeruleus | Parus caeruleus |
| Blue Vanga | Leptopterus madagascarinus | Cyanolanius madagascarinus |
| Blue-backed Conebill | Conirostrum sitticolor | Conirostrum sitticolor |
| Blue-backed Manakin | Chiroxiphia pareola | Chiroxiphia pareola |
| Blue-backed Tanager | Cyanicterus cyanicterus | Cyanicterus cyanicterus |
| Blue-banded Kingfisher | Alcedo euryzona | Alcedo euryzona |
| Blue-banded Pitta | Pitta arcuata | Pitta arcuata |
| Blue-banded Toucanet | Aulacorhynchus coeruleicinctis | Aulacorhynchus coeruleicinctis |
| Blue-bellied Roller | Coracias cyanogaster | Coracias cyanogaster |
| Blue-black Grassquit | Volatinia jacarina | Volatinia jacarina |
| Blue-black Grosbeak | Cyanocompsa cyanoides | Cyanocompsa cyanoides |
| Blue-black Kingfisher | Halcyon nigrocyanea | Todirhamphus nigrocyaneus |
| Blue-breasted Kingfisher | Halcyon malimbica | Halcyon malimbica |
| Blue-browed Tanager | Tangara cyanotis | Tangara cyanotis |
| Blue-capped Puffleg | Eriocnemis glaucopoides | Eriocnemis glaucopoides |
| Blue-capped Tanager | Thraupis cyanocephala | Thraupis cyanocephala |
| Blue-chested Hummingbird | Amazilia amabilis | Amazilia amabilis |
| Blue-chinned Sapphire | Chlorestes notatus | Chlorestes notatus |
| Blue-collared Parrot | Geoffroyus simplex | Geoffroyus simplex |
| Blue-crowned Chlorophonia | Chlorophonia occipitalis | Chlorophonia occipitalis |
| Blue-crowned Manakin | Pipra coronata | Pipra coronata |
| Blue-crowned Motmot | Momotus momota | Momotus momota |
| Blue-crowned Trogon | Trogon curucui | Trogon curucui |
| Blue-eared Barbet | Megalaima australis | Megalaima australis |
| Blue-eared Kingfisher | Alcedo meninting | Alcedo meninting |
| Blue-eared Lory | Eos semilarvata | Eos semilarvata |
| Blue-eyed Cockatoo | Cacatua ophthalmica | Cacatua ophthalmica |
| Blue-faced Honeyeater | Entomyzon cyanotis | Entomyzon cyanotis |
| Blue-footed Booby | Sula nebouxii | Sula nebouxii |
| Blue-fronted Lancebill | Doryfera johannae | Doryfera johannae |
| Blue-fronted Lorikeet | Charmosyna toxopei | Charmosyna toxopei |
| Blue-fronted Redstart | Phoenicurus frontalis | Phoenicurus frontalis |
| Blue-grey Gnatcatcher | Polioptila caerulea | Polioptila caerulea |
| Blue-grey Tanager | Thraupis episcopus | Thraupis episcopus |
| Blue-headed Coucal | Centropus monachus | Centropus monachus |
| Blue-headed Fantail | Rhipidura cyaniceps | Rhipidura cyaniceps |
| Blue-headed Hummingbird | Cyanophaia bicolor | Cyanophaia bicolor |
| Blue-headed Macaw | Ara couloni | Ara couloni |
| Blue-headed Parrot | Pionus menstruus | Pionus menstruus |
| Blue-headed Pitta | Pitta baudi | Pitta baudii |
| Blue-headed Sapphire | Hylocharis grayi | Hylocharis grayi |
| Blue-headed Sunbird | Nectarinia alinae | Nectarinia alinae |
| Blue-mantled Thornbill | Chalcostigma stanleyi | Chalcostigma stanleyi |
| Blue-masked Leafbird | Chloropsis venusta | Chloropsis venusta |
| Blue-naped Chlorophonia | Chlorophonia cyanea | Chlorophonia cyanea |
| Blue-naped Mousebird | Urocolius macrourus | Urocolius macrourus |
| Blue-naped Parrot | Tanygnathus lucionensis | Tanygnathus lucionensis |
| Blue-naped Pitta | Pitta nipalensis | Pitta nipalensis |
| Blue-necked Jacamar | Galbula cyanicollis | Galbula cyanicollis |
| Blue-necked Tanager | Tangara cyanicollis | Tangara cyanicollis |
| Blue-rumped Manakin | Pipra isidorei | Pipra isidorei |
| Blue-rumped Parrot | Psittinus cyanurus | Psittinus cyanurus |
| Blue-streaked Lory | Eos reticulata | Eos reticulata |
| Blue-tailed Emerald | Chlorostilbon mellisugus | Chlorostilbon mellisugus |
| Blue-tailed Hummingbird | Amazilia cyanura | Amazilia cyanura |
| Blue-tailed Trogon | Trogon comptus | Harpactes reinwardtii |
| Blue-throated Barbet | Megalaima asiatica | Megalaima asiatica |
| Blue-throated Goldentail | Hylocharis eliciae | Hylocharis eliciae |
| Blue-throated Hummingbird | Lampornis clemenciae | Lampornis clemenciae |
| Blue-throated Motmot | Aspatha gularis | Aspatha gularis |
| Blue-throated Roller | Eurystomus gularis | Eurystomus gularis |
| Blue-throated Starfrontlet | Coeligena helianthea | Coeligena helianthea |
| Blue-tufted Starthroat | Heliomaster furcifer | Heliomaster furcifer |
| Blue-wattled Bulbul | Pycnonotus nieuwenhuisii | Pycnonotus nieuwenhuisii |
| Blue-whiskered Tanager | Tangara johannae | Tangara johannae |
| Blue-winged Goose | Cyanochen cyanopterus | Cyanochen cyanopterus |
| Blue-winged Kookaburra | Dacelo leachii | Dacelo leachii |
| Blue-winged Leafbird | Chloropsis cochinchinensis | Chloropsis cochinchinensis |
| Blue-winged Minla | Minla cyanouroptera | Minla cyanouroptera |
| Blue-winged Parrot | Neophema chrysostoma | Neophema chrysostoma |
| Blue-winged Parrotlet | Forpus xanthopterygius | Forpus xanthopterygius |
| Blue-winged Pitta | Pitta brachyura | Pitta moluccensis |
| Blue-winged Teal | Anas discors | Anas discors |
| Blue-winged Warbler | Vermivora pinus | Vermivora pinus |
| Bluethroat | Luscinia svecicus | Luscinia svecica |
| Bluish-fronted Jacamar | Galbula cyanescens | Galbula cyanescens |
| Bluish-slate Antshrike | Thamnomanes schistogynus | Thamnomanes schistogynus |
| Blyth's Frogmouth | Batrachostomus affinis | Batrachostomus affinis |
| Blyth's Hornbill | Aceros plicatus | Aceros plicatus |
| Blyth's Kingfisher | Alcedo hercules | Alcedo hercules |
| Blyth's Pipit | Anthus godlewskii | Anthus godlewskii |
| Blyth's Tragopan | Tragopan blythii | Tragopan blythii |
| Boat-billed Flycatcher | Megarynchus pitangua | Megarynchus pitangua |
| Boat-billed Heron | Cochlearius cochlearius | Cochlearius cochlearia |
| Boat-tailed Grackle | Quiscalus major | Quiscalus major |
| Bob-tailed Weaver | Brachycope anomala | Brachycope anomala |
| Bobolink | Dolichonyx oryzivorus | Dolichonyx oryzivorus |
| Bocage's Longbill | Amaurocichla bocagii | Amaurocichla bocagii |
| Bocage's Sunbird | Nectarinia bocagii | Nectarinia bocagii |
| Bocage's Weaver | Ploceus temporalis | Ploceus temporalis |
| Bogota Rail | Rallus semiplumbeous | Rallus semiplumbeus |
| Bohemian Waxwing | Bombycilla garrulus | Bombycilla garrulus |
| Bolivian Blackbird | Oreopsar bolivianus | Oreopsar bolivianus |
| Bolivian Earthcreeper | Upucerthia harterti | Upucerthia harterti |
| Bolivian Recurvebill | Philydor striatus | Simoxenops striatus |
| Bolivian Tyrannulet | Zimmerius bolivianus | Zimmerius bolivianus |
| Bolle's Pigeon | Columba bollii | Columba bollii |
| Bonaparte's Gull | Larus philadelphia | Larus philadelphia |
| Bonaparte's Nightjar | Caprimulgus concretus | Caprimulgus concretus |
| Bonelli's Eagle | Hieraaetus fasciatus | Hieraaetus fasciatus |
| Bonelli's Warbler | Phylloscopus bonelli | Phylloscopus bonelli |
| Bonin Petrel | Pterodroma hypoleuca | Pterodroma hypoleuca |
| Booted Eagle | Hieraaetus pennatus | Hieraaetus pennatus |
| Booted Racket-tail | Ocreatus underwoodii | Ocreatus underwoodii |
| Booted Warbler | Hippolais caligata | Hippolais caligata |
| Boran Cisticola | Cisticola bodessa | Cisticola bodessa |
| Boreal Chickadee | Parus hudsonicus | Parus hudsonicus |
| Bornean Bristlehead | Pityriasis gymnocephala | Pityriasis gymnocephala |
| Bornean Frogmouth | Batrachostomus cornutus | Batrachostomus mixtus |
| Bornean Stubtail | Urosphena whiteheadi | Urosphena whiteheadi |
| Botha's Lark | Botha fringillaris | Spizocorys fringillaris |
| Botteri's Sparrow | Aimophila botterii | Aimophila botterii |
| Boucard's Wren | Campylorhynchus jocosus | Campylorhynchus jocosus |
| Bougainville Honeyeater | Melilestes bougainvillei | Stresemannia bougainvillei |
| Bougainville Monarch | Monarcha erythrosticta | Monarcha erythrostictus |
| Boulder Chat | Pinarornis plumosus | Pinarornis plumosus |
| Bourke's Parrot | Neophema bourkii | Neopsephotus bourkii |
| Brace's Emerald | Chlorostilbon bracei | Chlorostilbon bracei |
| Bradfield's Hornbill | Tockus bradfieldi | Tockus bradfieldi |
| Bradfield's Swift | Apus bradfieldi | Apus bradfieldi |
| Brahminy Kite | Haliastur indus | Haliastur indus |
| Brambling | Fringilla montifringilla | Fringilla montifringilla |
| Brandt's Cormorant | Phalacrocorax penicillatus | Phalacrocorax penicillatus |
| Brasilia Tapaculo | Scytalopus novacapitalis | Scytalopus novacapitalis |
| Brass's Friarbird | Philemon brassi | Philemon brassi |
| Brassy-breasted Tanager | Tangara desmaresti | Tangara desmaresti |
| Brazilian Merganser | Mergus octosetaceus | Mergus octosetaceus |
| Brazilian Ruby | Clytolaema rubricauda | Clytolaema rubricauda |
| Brazilian Tanager | Ramphocelus bresilius | Ramphocelus bresilius |
| Brazilian Teal | Amazonetta brasiliensis | Amazonetta brasiliensis |
| Brazilian Tinamou | Crypturellus strigulosus | Crypturellus strigulosus |
| Brazza's Martin | Phedina brazzae | Phedina brazzae |
| Brent Goose | Branta bernicla | Branta bernicla |
| Brewer's Blackbird | Euphagus cyanocephalus | Euphagus cyanocephalus |
| Brewer's Sparrow | Spizella breweri | Spizella breweri |
| Bridled Honeyeater | Meliphaga frenata | Lichenostomus frenatus |
| Bridled Sparrow | Aimophila mystacalis | Aimophila mystacalis |
| Bridled Tern | Sterna anaethetus | Sterna anaethetus |
| Bridled Titmouse | Parus wollweberi | Parus wollweberi |
| Bridled White-eye | Zosterops conspicillata | Zosterops conspicillatus |
| Bright-rumped Attila | Attila spadiceus | Attila spadiceus |
| Brimstone Canary | Serinus sulphuratus | Serinus sulphuratus |
| Bristle-crowned Starling | Onychognathus salvadorii | Onychognathus salvadorii |
| Bristle-nosed Barbet | Gymnobucco peli | Gymnobucco peli |
| Bristle-thighed Curlew | Numenius tahitiensis | Numenius tahitiensis |
| Broad-billed Flycatcher | Myiagra ruficollis | Myiagra ruficollis |
| Broad-billed Hummingbird | Cynanthus latirostris | Cynanthus latirostris |
| Broad-billed Motmot | Electron platyrhynchum | Electron platyrhynchum |
| Broad-billed Prion | Pachyptila vittata | Pachyptila vittata |
| Broad-billed Sandpiper | Limicola falcinellus | Limicola falcinellus |
| Broad-billed Tody | Todus subulatus | Todus subulatus |
| Broad-tailed Grassbird | Schoenicola platyura | Schoenicola platyura |
| Broad-tailed Hummingbird | Selasphorus platycercus | Selasphorus platycercus |
| Broad-tipped Hermit | Phaethornis gounellei | Phaethornis gounellei |
| Broad-winged Hawk | Buteo platypterus | Buteo platypterus |
| Brolga | Grus rubicunda | Grus rubicunda |
| Bronze Sunbird | Nectarinia kilimensis | Nectarinia kilimensis |
| Bronze-green Euphonia | Euphonia mesochrysa | Euphonia mesochrysa |
| Bronze-tailed Comet | Polyonymus caroli | Polyonymus caroli |
| Bronze-tailed Plumeleteer | Chalybura urochrysia | Chalybura urochrysia |
| Bronze-tailed Thornbill | Chalcostigma heteropogon | Chalcostigma heteropogon |
| Bronze-winged Courser | Rhinoptilus chalcopterus | Rhinoptilus chalcopterus |
| Bronze-winged Jacana | Metopidius indicus | Metopidius indicus |
| Bronze-winged Parrot | Pionus chalcopterus | Pionus chalcopterus |
| Bronzed Cowbird | Molothrus aeneus | Molothrus aeneus |
| Bronzed Drongo | Dicrurus aeneus | Dicrurus aeneus |
| Bronzy Hermit | Glaucis aenea | Glaucis aenea |
| Bronzy Inca | Coeligena coeligena | Coeligena coeligena |
| Bronzy Jacamar | Galbula leucogastra | Galbula leucogastra |
| Brown Accentor | Prunella fulvescens | Prunella fulvescens |
| Brown Babbler | Turdoides plebejus | Turdoides plebejus |
| Brown Barbet | Calorhamphus fuliginosus | Calorhamphus fuliginosus |
| Brown Booby | Sula leucogaster | Sula leucogaster |
| Brown Bullfinch | Pyrrhula nipalensis | Pyrrhula nipalensis |
| Brown Cacholote | Pseudoseisura lophotes | Pseudoseisura lophotes |
| Brown Crake | Amaurornis akool | Amaurornis akool |
| Brown Dipper | Cinclus pallasii | Cinclus pallasii |
| Brown Eared-Pheasant | Crossoptilon mantchuricum | Crossoptilon mantchuricum |
| Brown Falcon | Falco berigora | Falco berigora |
| Brown Fulvetta | Alcippe brunneicauda | Alcippe brunneicauda |
| Brown Honeyeater | Lichmera indistincta | Lichmera indistincta |
| Brown Inca | Coeligena wilsoni | Coeligena wilsoni |
| Brown Jacamar | Brachygalba lugubris | Brachygalba lugubris |
| Brown Jay | Psilorhinus morio | Psilorhinus morio |
| Brown Kiwi | Apteryx australis | Apteryx australis |
| Brown Mesite | Mesitornis unicolor | Mesitornis unicolor |
| Brown Nightjar | Veles binotatus | Caprimulgus binotatus |
| Brown Nunlet | Nonnula brunnea | Nonnula brunnea |
| Brown Oriole | Oriolus szalayi | Oriolus szalayi |
| Brown Parrotbill | Paradoxornis unicolor | Paradoxornis unicolor |
| Brown Pelican | Pelecanus occidentalis | Pelecanus occidentalis |
| Brown Quail | Coturnix australis | Coturnix ypsilophora |
| Brown Shrike | Lanius cristatus | Lanius cristatus |
| Brown Sicklebill | Epimachus meyeri | Epimachus meyeri |
| Brown Songlark | Cincloramphus cruralis | Cincloramphus cruralis |
| Brown Tanager | Orchesticus abeillei | Orchesticus abeillei |
| Brown Thornbill | Acanthiza pusilla | Acanthiza pusilla |
| Brown Thrasher | Toxostoma rufum | Toxostoma rufum |
| Brown Tinamou | Crypturellus obsoletus | Crypturellus obsoletus |
| Brown Tit-Babbler | Macronous striaticeps | Macronous striaticeps |
| Brown Treecreeper | Climacteris picumnus | Climacteris picumnus |
| Brown Trembler | Cinclocerthia ruficauda | Cinclocerthia ruficauda |
| Brown-backed Cisticola | Cisticola discolor | Cisticola discolor |
| Brown-backed Flowerpecker | Dicaeum everetti | Dicaeum everetti |
| Brown-backed Honeyeater | Ramsayornis modestus | Ramsayornis modestus |
| Brown-backed Mockingbird | Mimus dorsalis | Mimus dorsalis |
| Brown-backed Solitaire | Myadestes occidentalis | Myadestes occidentalis |
| Brown-backed Whistler | Pachycephala modesta | Pachycephala modesta |
| Brown-backed Woodpecker | Picoides obsoletus | Dendropicos obsoletus |
| Brown-banded Antpitta | Grallaria milleri | Grallaria milleri |
| Brown-banded Puffbird | Notharchus ordii | Notharchus ordii |
| Brown-bellied Antwren | Myrmotherula gutturalis | Myrmotherula gutturalis |
| Brown-bellied Swallow | Notiochelidon murina | Notiochelidon murina |
| Brown-billed Scythebill | Campylorhamphus pusillus | Campylorhamphus pusillus |
| Brown-breasted Antpitta | Myrmothera simplex | Myrmothera simplex |
| Brown-breasted Barbet | Lybius melanopterus | Lybius melanopterus |
| Brown-breasted Flycatcher | Muscicapa muttui | Muscicapa muttui |
| Brown-capped Fantail | Rhipidura diluta | Rhipidura diluta |
| Brown-capped Redstart | Myioborus brunniceps | Myioborus brunniceps |
| Brown-capped Tit-Spinetail | Leptasthenura fuliginiceps | Leptasthenura fuliginiceps |
| Brown-capped Tyrannulet | Ornithion brunneicapillum | Ornithion brunneicapillum |
| Brown-capped Vireo | Vireo leucophrys | Vireo leucophrys |
| Brown-capped Weaver | Ploceus insignis | Ploceus insignis |
| Brown-capped Woodpecker | Picoides moluccensis | Dendrocopos nanus |
| Brown-cheeked Fulvetta | Alcippe poioicephala | Alcippe poioicephala |
| Brown-cheeked Hornbill | Ceratogymna cylindricus | Ceratogymna cylindricus |
| Brown-chested Alethe | Alethe poliocephala | Alethe poliocephala |
| Brown-chested Martin | Phaeoprogne tapera | Phaeoprogne tapera |
| Brown-eared Woodpecker | Campethera caroli | Campethera caroli |
| Brown-flanked Tanager | Thlypopsis pectoralis | Thlypopsis pectoralis |
| Brown-fronted Woodpecker | Picoides auriceps | Dendrocopos auriceps |
| Brown-headed Apalis | Apalis alticola | Apalis alticola |
| Brown-headed Cowbird | Molothrus ater | Molothrus ater |
| Brown-headed Crow | Corvus fuscicapillus | Corvus fuscicapillus |
| Brown-headed Greenlet | Hylophilus brunneiceps | Hylophilus brunneiceps |
| Brown-headed Honeyeater | Melithreptus brevirostris | Melithreptus brevirostris |
| Brown-headed Nuthatch | Sitta pusilla | Sitta pusilla |
| Brown-headed Parrot | Poicephalus cryptoxanthus | Poicephalus cryptoxanthus |
| Brown-hooded Gull | Larus maculipennis | Larus maculipennis |
| Brown-hooded Kingfisher | Halcyon albiventris | Halcyon albiventris |
| Brown-hooded Parrot | Pionopsitta haematotis | Pionopsitta haematotis |
| Brown-necked Parrot | Poicephalus robustus | Poicephalus robustus |
| Brown-necked Raven | Corvus ruficollis | Corvus ruficollis |
| Brown-rumped Bunting | Emberiza affinis | Emberiza affinis |
| Brown-rumped Foliage-gleaner | Automolus melanopezus | Automolus melanopezus |
| Brown-rumped Seedeater | Serinus tristriatus | Serinus tristriatus |
| Brown-rumped Tapaculo | Scytalopus latebricola | Scytalopus latebricola |
| Brown-throated Barbet | Megalaima corvina | Megalaima corvina |
| Brown-throated Wattle-eye | Platysteira cyanea | Platysteira cyanea |
| Brown-winged Kingfisher | Halcyon amauroptera | Pelargopsis amauropterus |
| Brownish Elaenia | Elaenia pelzelni | Elaenia pelzelni |
| Brownish Flycatcher | Cnipodectes subbrunneus | Cnipodectes subbrunneus |
| Brush Bronzewing | Phaps elegans | Phaps elegans |
| Brush Cuckoo | Cacomantis variolosus | Cacomantis variolosus |
| Brushland Tinamou | Nothoprocta cinerascens | Nothoprocta cinerascens |
| Bubbling Cisticola | Cisticola bulliens | Cisticola bulliens |
| Budgerigar | Melopsittacus undulatus | Melopsittacus undulatus |
| Buff-banded Rail | Rallus philippensis | Gallirallus philippensis |
| Buff-banded Tyrannulet | Mecocerculus hellmayri | Mecocerculus hellmayri |
| Buff-bellied Hermit | Phaethornis subochraceus | Phaethornis subochraceus |
| Buff-bellied Hummingbird | Amazilia yucatanensis | Amazilia yucatanensis |
| Buff-bellied Tanager | Thlypopsis inornata | Thlypopsis inornata |
| Buff-bellied Warbler | Phyllolais pulchella | Phyllolais pulchella |
| Buff-breasted Earthcreeper | Upucerthia validirostris | Upucerthia validirostris |
| Buff-breasted Flycatcher | Empidonax fulvifrons | Empidonax fulvifrons |
| Buff-breasted Sabrewing | Campylopterus duidae | Campylopterus duidae |
| Buff-breasted Sandpiper | Tryngites subruficollis | Tryngites subruficollis |
| Buff-breasted Wren | Thryothorus leucotis | Thryothorus leucotis |
| Buff-browed Foliage-gleaner | Philydor rufosuperciliatus | Syndactyla rufosuperciliata |
| Buff-chested Babbler | Stachyris ambigua | Stachyris ambigua |
| Buff-crested Bustard | Eupodotis gindiana | Eupodotis gindiana |
| Buff-fronted Foliage-gleaner | Philydor rufus | Philydor rufus |
| Buff-fronted Owl | Aegolius harrisii | Aegolius harrisii |
| Buff-headed Coucal | Centropus milo | Centropus milo |
| Buff-necked Ibis | Theristicus caudatus | Theristicus caudatus |
| Buff-necked Woodpecker | Meiglyptes tukki | Meiglyptes tukki |
| Buff-rumped Woodpecker | Meiglyptes tristis | Meiglyptes tristis |
| Buff-spotted Woodpecker | Campethera nivosa | Campethera nivosa |
| Buff-streaked Chat | Saxicola bifasciata | Saxicola bifasciata |
| Buff-tailed Coronet | Boissonneaua flavescens | Boissonneaua flavescens |
| Buff-tailed Sicklebill | Eutoxeres condamini | Eutoxeres condamini |
| Buff-throated Apalis | Apalis rufogularis | Apalis rufogularis |
| Buff-throated Foliage-gleaner | Automolus ochrolaemus | Automolus ochrolaemus |
| Buff-throated Purpletuft | Iodopleura pipra | Iodopleura pipra |
| Buff-throated Saltator | Saltator maximus | Saltator maximus |
| Buff-throated Sunbird | Nectarinia adelberti | Nectarinia adelberti |
| Buff-throated Treehunter | Thripadectes scrutator | Thripadectes scrutator |
| Buff-throated Woodcreeper | Xiphorhynchus guttatus | Xiphorhynchus guttatus |
| Buff-winged Starfrontlet | Coeligena lutetiae | Coeligena lutetiae |
| Bufflehead | Bucephala albeola | Bucephala albeola |
| Buffy Hummingbird | Leucippus fallax | Leucippus fallax |
| Buffy Pipit | Anthus vaalensis | Anthus vaalensis |
| Buffy Tuftedcheek | Pseudocolaptes lawrencii | Pseudocolaptes lawrencii |
| Bull-headed Shrike | Lanius bucephalus | Lanius bucephalus |
| Buller's Albatross | Diomedea bulleri | Diomedea bulleri |
| Bulo Burti Boubou | Laniarius liberatus | Laniarius liberatus |
| Bulwer's Petrel | Bulweria bulwerii | Bulweria bulwerii |
| Bulwer's Pheasant | Lophura bulweri | Lophura bulweri |
| Bumblebee Hummingbird | Atthis heloisa | Atthis heloisa |
| Burchell's Courser | Cursorius rufus | Cursorius rufus |
| Burmese Shrike | Lanius collurioides | Lanius collurioides |
| Burnished-buff Tanager | Tangara cayana | Tangara cayana |
| Burnt-neck Eremomela | Eremomela usticollis | Eremomela usticollis |
| Burrowing Owl | Athene cunicularia | Speotyto cunicularia |
| Buru Honeyeater | Lichmera deningeri | Lichmera deningeri |
| Bush Wren | Xenicus longipes | Xenicus longipes |
| Bushy-crested Hornbill | Anorrhinus galeritus | Anorrhinus galeritus |
| Bushy-crested Jay | Cissilopha melanocyanea | Cyanocorax melanocyaneus |
| Cabot's Tragopan | Tragopan caboti | Tragopan caboti |
| Cactus Canastero | Thripophaga cactorum | Asthenes cactorum |
| Caica Parrot | Pionopsitta caica | Pionopsitta caica |
| Calandra Lark | Melanocorypha calandra | Melanocorypha calandra |
| California Gnatcatcher | Polioptila californica | Polioptila californica |
| California Quail | Lophortyx californica | Callipepla californica |
| California Thrasher | Toxostoma redivivum | Toxostoma redivivum |
| California Towhee | Pipilo crissalis | Pipilo crissalis |
| Calliope Hummingbird | Stellula calliope | Stellula calliope |
| Campo Flicker | Colaptes campestris | Colaptes campestris |
| Campo Miner | Geobates poeciloptera | Geobates poecilopterus |
| Canada Goose | Branta canadensis | Branta canadensis |
| Canada Warbler | Wilsonia canadensis | Wilsonia canadensis |
| Canary Islands Chat | Saxicola dacotiae | Saxicola dacotiae |
| Canary Islands Oystercatcher | Haematopus meadewaldoi | Haematopus meadewaldoi |
| Canary-winged Parakeet | Brotogeris versicolurus | Brotogeris versicolurus |
| Canebrake Groundcreeper | Phacellodomus dendrocolaptoides | Clibanornis dendrocolaptoides |
| Canvasback | Aythya valisineria | Aythya valisineria |
| Canyon Canastero | Thripophaga pudibunda | Asthenes pudibunda |
| Canyon Towhee | Pipilo fuscus | Pipilo fuscus |
| Canyon Wren | Catherpes mexicanus | Catherpes mexicanus |
| Cape Bulbul | Pycnonotus capensis | Pycnonotus capensis |
| Cape Bunting | Emberiza capensis | Emberiza capensis |
| Cape Cormorant | Phalacrocorax capensis | Phalacrocorax capensis |
| Cape Francolin | Francolinus capensis | Francolinus capensis |
| Cape Gannet | Morus capensis | Morus capensis |
| Cape Longclaw | Macronyx capensis | Macronyx capensis |
| Cape May Warbler | Dendroica tigrina | Dendroica tigrina |
| Cape Siskin | Serinus tottus | Serinus totta |
| Cape Sparrow | Passer melanurus | Passer diffusus |
| Cape Sugarbird | Promerops cafer | Promerops cafer |
| Cape Teal | Anas capensis | Anas capensis |
| Cape Verde Petrel | Pterodroma feae | Pterodroma feae |
| Cape Wagtail | Motacilla capensis | Motacilla capensis |
| Cape Weaver | Ploceus capensis | Ploceus capensis |
| Capped Conebill | Conirostrum albifrons | Conirostrum albifrons |
| Capped Heron | Pilherodius pileatus | Pilherodius pileatus |
| Capped Seedeater | Sporophila bouvreuil | Sporophila bouvreuil |
| Capped Wheatear | Oenanthe pileata | Oenanthe pileata |
| Capuchin Babbler | Phyllanthus atripennis | Phyllanthus atripennis |
| Cardinal Lory | Chalcopsitta cardinalis | Chalcopsitta cardinalis |
| Cardinal Quelea | Quelea cardinalis | Quelea cardinalis |
| Cardinal Woodpecker | Dendropicos fuscescens | Dendropicos fuscescens |
| Carib Grackle | Quiscalus lugubris | Quiscalus lugubris |
| Caribbean Coot | Fulica caribaea | Fulica caribaea |
| Caribbean Elaenia | Elaenia martinica | Elaenia martinica |
| Caribbean Martin | Progne dominicensis | Progne dominicensis |
| Carmelite Sunbird | Nectarinia fuliginosa | Nectarinia fuliginosa |
| Carolina Chickadee | Parus carolinensis | Parus carolinensis |
| Carolina Wren | Thryothorus ludovicianus | Thryothorus ludovicianus |
| Carrion Crow | Corvus corone | Corvus corone |
| Carunculated Caracara | Phalcoboenus carunculatus | Phalcoboenus carunculatus |
| Caspian Plover | Charadrius asiaticus | Charadrius asiaticus |
| Caspian Snowcock | Tetraogallus caspius | Tetraogallus caspius |
| Caspian Tern | Hydroprogne caspia | Sterna caspia |
| Casqued Oropendola | Psarocolius oseryi | Psarocolius oseryi |
| Cassin's Auklet | Ptychoramphus aleuticus | Ptychoramphus aleuticus |
| Cassin's Finch | Carpodacus cassinii | Carpodacus cassinii |
| Cassin's Kingbird | Tyrannus vociferans | Tyrannus vociferans |
| Cassin's Sparrow | Aimophila cassinii | Aimophila cassinii |
| Castelnau's Antshrike | Thamnophilus cryptoleucus | Thamnophilus cryptoleucus |
| Cattle Egret | Bubulcus ibis | Bubulcus ibis |
| Cattle Tyrant | Machetornis rixosus | Machetornis rixosus |
| Cauca Guan | Penelope perspicax | Penelope perspicax |
| Caucasian Chiffchaff | Phylloscopus lorenzii | Phylloscopus lorenzii |
| Caucasian Snowcock | Tetraogallus caucasicus | Tetraogallus caucasicus |
| Caura Antbird | Percnostola caurensis | Percnostola caurensis |
| Cave Swallow | Hirundo fulva | Hirundo fulva |
| Cayenne Jay | Cyanocorax cayanus | Cyanocorax cayanus |
| Cayenne Nightjar | Caprimulgus maculosus | Caprimulgus maculosus |
| Cedar Waxwing | Bombycilla cedrorum | Bombycilla cedrorum |
| Cerulean Warbler | Dendroica cerulea | Dendroica cerulea |
| Cetti's Warbler | Cettia cetti | Cettia cetti |
| Ceylon Frogmouth | Batrachostomus moniliger | Batrachostomus moniliger |
| Ceylon Spurfowl | Galloperdix bicalcarata | Galloperdix bicalcarata |
| Chaco Chachalaca | Ortalis canicollis | Ortalis canicollis |
| Chaco Earthcreeper | Upucerthia certhioides | Upucerthia certhioides |
| Chaco Pipit | Anthus chacoensis | Anthus chacoensis |
| Chaffinch | Fringilla coelebs | Fringilla coelebs |
| Chalk-browed Mockingbird | Mimus saturninus | Mimus saturninus |
| Channel-billed Cuckoo | Scythrops novaehollandiae | Scythrops novaehollandiae |
| Channel-billed Toucan | Ramphastos vitellinus | Ramphastos vitellinus |
| Chapin's Apalis | Apalis chapini | Apalis chapini |
| Chaplin's Barbet | Lybius chaplini | Lybius chaplini |
| Chapman's Swift | Chaetura chapmani | Chaetura chapmani |
| Chapman's Tyrannulet | Phylloscartes chapmani | Phylloscartes chapmani |
| Charming Hummingbird | Amazilia decora | Amazilia decora |
| Chatham Islands Petrel | Pterodroma axillaris | Pterodroma axillaris |
| Chattering Cisticola | Cisticola anonyma | Cisticola anonymus |
| Chattering Lory | Lorius garrulus | Lorius garrulus |
| Checker-throated Antwren | Myrmotherula fulviventris | Myrmotherula fulviventris |
| Checker-throated Woodpecker | Picus mentalis | Picus mentalis |
| Checkered Woodpecker | Picoides mixtus | Picoides mixtus |
| Cheer Pheasant | Catreus wallichii | Catreus wallichii |
| Cherrie's Antwren | Myrmotherula cherriei | Myrmotherula cherriei |
| Cherry-throated Tanager | Nemosia rourei | Nemosia rourei |
| Chestnut Antpitta | Grallaria blakei | Grallaria blakei |
| Chestnut Bunting | Emberiza rutila | Emberiza rutila |
| Chestnut Canastero | Thripophaga steinbachi | Asthenes steinbachi |
| Chestnut Jacamar | Galbalcyrhynchus leucotis | Galbalcyrhynchus purusianus |
| Chestnut Piculet | Picumnus cinnamomeus | Picumnus cinnamomeus |
| Chestnut Seedeater | Sporophila cinnamomea | Sporophila cinnamomea |
| Chestnut Sparrow | Sorella eminibey | Passer eminibey |
| Chestnut Wattle-eye | Platysteira castanea | Platysteira castanea |
| Chestnut Weaver | Ploceus rubiginosus | Ploceus rubiginosus |
| Chestnut Woodpecker | Celeus elegans | Celeus elegans |
| Chestnut-backed Antbird | Myrmeciza exsul | Myrmeciza exsul |
| Chestnut-backed Chickadee | Parus rufescens | Parus rufescens |
| Chestnut-backed Owlet | Glaucidium sjostedti | Glaucidium castanonotum |
| Chestnut-backed Sparrow-Lark | Eremopterix leucotis | Eremopterix leucotis |
| Chestnut-backed Tanager | Tangara preciosa | Tangara preciosa |
| Chestnut-backed Thornbird | Phacellodomus dorsalis | Phacellodomus dorsalis |
| Chestnut-bellied Cuckoo | Hyetornis pluvialis | Hyetornis pluvialis |
| Chestnut-bellied Euphonia | Euphonia pectoralis | Euphonia pectoralis |
| Chestnut-bellied Fantail | Rhipidura hyperythra | Rhipidura hyperythra |
| Chestnut-bellied Guan | Penelope ochrogaster | Penelope ochrogaster |
| Chestnut-bellied Hummingbird | Amazilia castaneiventris | Amazilia castaneiventris |
| Chestnut-bellied Kingfisher | Halcyon farquhari | Todirhamphus farquhari |
| Chestnut-bellied Monarch | Monarcha castaneiventris | Monarcha castaneiventris |
| Chestnut-bellied Nuthatch | Sitta castanea | Sitta castanea |
| Chestnut-bellied Sandgrouse | Pterocles exustus | Pterocles exustus |
| Chestnut-bellied Seedeater | Sporophila castaneiventris | Sporophila castaneiventris |
| Chestnut-bellied Starling | Spreo pulcher | Lamprotornis pulcher |
| Chestnut-bellied Thrush | Turdus fulviventris | Turdus fulviventris |
| Chestnut-belted Gnateater | Conopophaga aurita | Conopophaga aurita |
| Chestnut-breasted Chlorophonia | Chlorophonia pyrrhophrys | Chlorophonia pyrrhophrys |
| Chestnut-breasted Coronet | Boissonneaua matthewsii | Boissonneaua matthewsii |
| Chestnut-breasted Cuckoo | Cacomantis castaneiventris | Cacomantis castaneiventris |
| Chestnut-breasted Whiteface | Aphelocephala pectoralis | Aphelocephala pectoralis |
| Chestnut-breasted Wren | Cyphorhinus thoracicus | Cyphorhinus thoracicus |
| Chestnut-capped Babbler | Timalia pileata | Timalia pileata |
| Chestnut-capped Blackbird | Agelaius ruficapillus | Agelaius ruficapillus |
| Chestnut-capped Flycatcher | Erythrocercus mccallii | Erythrocercus mccallii |
| Chestnut-capped Foliage-gleaner | Automolus rectirostris | Hylocryptus rectirostris |
| Chestnut-capped Puffbird | Bucco macrodactylus | Bucco macrodactylus |
| Chestnut-collared Swallow | Hirundo rufocollaris | Hirundo rufocollaris |
| Chestnut-collared Swift | Cypseloides rutilus | Cypseloides rutilus |
| Chestnut-crested Cotinga | Ampelion rufaxilla | Ampelion rufaxilla |
| Chestnut-crowned Antpitta | Grallaria ruficapilla | Grallaria ruficapilla |
| Chestnut-crowned Babbler | Pomatostomus ruficeps | Pomatostomus ruficeps |
| Chestnut-crowned Becard | Pachyramphus castaneus | Pachyramphus castaneus |
| Chestnut-crowned Foliage-gleaner | Automolus rufipileatus | Automolus rufipileatus |
| Chestnut-crowned Gnateater | Conopophaga castaneiceps | Conopophaga castaneiceps |
| Chestnut-eared Aracari | Pteroglossus castanotis | Pteroglossus castanotis |
| Chestnut-flanked White-eye | Zosterops erythropleura | Zosterops erythropleurus |
| Chestnut-fronted Macaw | Ara severa | Ara severa |
| Chestnut-headed Crake | Rallina castaneiceps | Anurolimnas castaneiceps |
| Chestnut-headed Nunlet | Nonnula amaurocephala | Nonnula amaurocephala |
| Chestnut-headed Oropendola | Psarocolius wagleri | Psarocolius wagleri |
| Chestnut-headed Sparrow-Lark | Eremopterix signata | Eremopterix signata |
| Chestnut-headed Tanager | Pyrrhocoma ruficeps | Pyrrhocoma ruficeps |
| Chestnut-mandibled Toucan | Ramphastos swainsonii | Ramphastos swainsonii |
| Chestnut-naped Antpitta | Grallaria nuchalis | Grallaria nuchalis |
| Chestnut-naped Francolin | Francolinus castaneicollis | Francolinus castaneicollis |
| Chestnut-rumped Woodcreeper | Xiphorhynchus pardalotus | Xiphorhynchus pardalotus |
| Chestnut-shouldered Antwren | Terenura humeralis | Terenura humeralis |
| Chestnut-shouldered Goshawk | Accipiter buergersi | Erythrotriorchis buergersi |
| Chestnut-sided Tapaculo | Scytalopus psychopompus | Scytalopus psychopompus |
| Chestnut-sided Warbler | Dendroica pensylvanica | Dendroica pensylvanica |
| Chestnut-sided White-eye | Zosterops mayottensis | Zosterops mayottensis |
| Chestnut-tailed Antbird | Myrmeciza hemimelaena | Myrmeciza hemimelaena |
| Chestnut-tailed Minla | Minla strigula | Minla strigula |
| Chestnut-throated Apalis | Apalis porphyrolaema | Apalis porphyrolaema |
| Chestnut-throated Seedeater | Sporophila telasco | Sporophila telasco |
| Chestnut-throated Spinetail | Synallaxis cherriei | Synallaxis cherriei |
| Chestnut-tipped Toucanet | Aulacorhynchus derbianus | Aulacorhynchus derbianus |
| Chestnut-vented Conebill | Conirostrum speciosum | Conirostrum speciosum |
| Chestnut-winged Chachalaca | Ortalis garrula | Ortalis garrula |
| Chestnut-winged Foliage-gleaner | Philydor erythropterus | Philydor erythropterus |
| Chestnut-winged Hookbill | Philydor strigilatus | Ancistrops strigilatus |
| Chestnut-winged Starling | Onychognathus fulgidus | Onychognathus fulgidus |
| Chicli Spinetail | Synallaxis spixi | Synallaxis spixi |
| Chiguanco Thrush | Turdus chiguanco | Turdus chiguanco |
| Chilean Flamingo | Phoenicopterus chilensis | Phoenicopterus chilensis |
| Chilean Flicker | Colaptes pitius | Colaptes pitius |
| Chilean Mockingbird | Mimus thenca | Mimus thenca |
| Chilean Pigeon | Columba araucana | Columba araucana |
| Chilean Skua | Catharacta chilensis | Catharacta chilensis |
| Chilean Swallow | Tachycineta meyeni | Tachycineta meyeni |
| Chilean Woodstar | Eulidia yarrellii | Eulidia yarrellii |
| Chiloe Wigeon | Anas sibilatrix | Anas sibilatrix |
| Chiming Wedgebill | Psophodes occidentalis | Psophodes occidentalis |
| Chimney Swift | Chaetura pelagica | Chaetura pelagica |
| Chinese Babax | Babax lanceolatus | Babax lanceolatus |
| Chinese Francolin | Francolinus pintadeanus | Francolinus pintadeanus |
| Chipping Sparrow | Spizella passerina | Spizella passerina |
| Chirinda Apalis | Apalis chirindensis | Apalis chirindensis |
| Chirping Cisticola | Cisticola pipiens | Cisticola pipiens |
| Choco Tinamou | Crypturellus kerriae | Crypturellus kerriae |
| Choco Toucan | Ramphastos brevis | Ramphastos brevis |
| Chocolate-backed Kingfisher | Halcyon badia | Halcyon badia |
| Chocolate-vented Tyrant | Neoxolmis rufiventris | Neoxolmis rufiventris |
| Cholo Alethe | Alethe choloensis | Alethe choloensis |
| Chopi Blackbird | Gnorimopsar chopi | Gnorimopsar chopi |
| Chotoy Spinetail | Schoeniophylax phryganophila | Schoeniophylax phryganophila |
| Christmas Island Shearwater | Puffinus nativitatis | Puffinus nativitatis |
| Christmas Island White-eye | Zosterops natalis | Zosterops natalis |
| Chubb's Cisticola | Cisticola chubbi | Cisticola chubbi |
| Chucao Tapaculo | Scelorchilus rubecula | Scelorchilus rubecula |
| Churring Cisticola | Cisticola njombe | Cisticola njombe |
| Cinderella Waxbill | Estrilda thomensis | Estrilda thomensis |
| Cinereous Antshrike | Thamnomanes caesius | Thamnomanes caesius |
| Cinereous Becard | Pachyramphus rufus | Pachyramphus rufus |
| Cinereous Bunting | Emberiza cineracea | Emberiza cineracea |
| Cinereous Conebill | Conirostrum cinereum | Conirostrum cinereum |
| Cinereous Finch | Piezorhina cinerea | Piezorhina cinerea |
| Cinereous Harrier | Circus cinereus | Circus cinereus |
| Cinereous Mourner | Laniocera hypopyrra | Laniocera hypopyrra |
| Cinereous Tinamou | Crypturellus cinereus | Crypturellus cinereus |
| Cinereous Tyrant | Knipolegus striaticeps | Knipolegus striaticeps |
| Cinereous Vulture | Aegypius monachus | Aegypius monachus |
| Cinereous-breasted Spinetail | Synallaxis hypospodia | Synallaxis hypospodia |
| Cinnamon Attila | Attila cinnamomeus | Attila cinnamomeus |
| Cinnamon Becard | Pachyramphus cinnamomeus | Pachyramphus cinnamomeus |
| Cinnamon Bittern | Ixobrychus cinnamomeus | Ixobrychus cinnamomeus |
| Cinnamon Flycatcher | Pyrrhomyias cinnamomea | Pyrrhomyias cinnamomea |
| Cinnamon Hummingbird | Amazilia rutila | Amazilia rutila |
| Cinnamon Tanager | Schistochlamys ruficapillus | Schistochlamys ruficapillus |
| Cinnamon Teal | Anas cyanoptera | Anas cyanoptera |
| Cinnamon Weaver | Ploceus badius | Ploceus badius |
| Cinnamon Woodpecker | Celeus loricatus | Celeus loricatus |
| Cinnamon-chested Flycatcher | Ficedula buruensis | Ficedula buruensis |
| Cinnamon-crested Spadebill | Platyrinchus saturatus | Platyrinchus saturatus |
| Cinnamon-rumped Foliage-gleaner | Philydor pyrrhodes | Philydor pyrrhodes |
| Cinnamon-rumped Trogon | Harpactes orrhophaeus | Harpactes orrhophaeus |
| Cinnamon-tailed Fantail | Rhipidura fuscorufa | Rhipidura fuscorufa |
| Cinnamon-tailed Sparrow | Aimophila sumichrasti | Aimophila sumichrasti |
| Cinnamon-throated Hermit | Phaethornis nattereri | Phaethornis nattereri |
| Cinnamon-throated Woodcreeper | Dendrexetastes rufigula | Dendrexetastes rufigula |
| Cinnamon-vented Piha | Lipaugus lanioides | Lipaugus lanioides |
| Cipo Canastero | Asthenes luizae | Asthenes luizae |
| Cirl Bunting | Emberiza cirlus | Emberiza cirlus |
| Citreoline Trogon | Trogon citreolus | Trogon citreolus |
| Citril Finch | Serinus citrinella | Serinus citrinella |
| Citrine Wagtail | Motacilla citreola | Motacilla citreola |
| Citrine Warbler | Basileuterus luteoviridis | Basileuterus luteoviridis |
| Citron-bellied Attila | Attila citriniventris | Attila citriniventris |
| Clapper Lark | Mirafra apiata | Mirafra apiata |
| Clapper Rail | Rallus longirostris | Rallus longirostris |
| Clapperton's Francolin | Francolinus clappertoni | Francolinus clappertoni |
| Clarion Wren | Troglodytes tanneri | Troglodytes tanneri |
| Clark's Grebe | Aechmophorus clarkii | Aechmophorus clarkii |
| Clark's Nutcracker | Nucifraga columbiana | Nucifraga columbiana |
| Clarke's Weaver | Ploceus golandi | Ploceus golandi |
| Cliff Flycatcher | Hirundinea ferruginea | Hirundinea ferruginea |
| Cloud-scraping Cisticola | Cisticola dambo | Cisticola dambo |
| Cloven-feathered Dove | Drepanoptila holosericea | Drepanoptila holosericea |
| Club-winged Manakin | Machaeropterus deliciosus | Machaeropterus deliciosus |
| Coal Tit | Parus ater | Parus ater |
| Coal-crested Finch | Charitospiza eucosma | Charitospiza eucosma |
| Coastal Miner | Geositta peruviana | Geositta peruviana |
| Cobalt-winged Parakeet | Brotogeris cyanoptera | Brotogeris cyanoptera |
| Cocha Antshrike | Thamnophilus praecox | Thamnophilus praecox |
| Cock-tailed Tyrant | Alectrurus tricolor | Alectrurus tricolor |
| Cockatiel | Nymphicus hollandicus | Nymphicus hollandicus |
| Cocoa Thrush | Turdus fumigatus | Turdus fumigatus |
| Cocoi Heron | Ardea cocoi | Ardea cocoi |
| Cocos Cuckoo | Coccyzus ferrugineus | Coccyzus ferrugineus |
| Colima Warbler | Vermivora crissalis | Vermivora crissalis |
| Collared Antshrike | Sakesphorus bernardi | Sakesphorus bernardi |
| Collared Apalis | Apalis ruwenzorii | Apalis ruwenzorii |
| Collared Aracari | Pteroglossus torquatus | Pteroglossus torquatus |
| Collared Crow | Corvus torquatus | Corvus torquatus |
| Collared Falconet | Microhierax caerulescens | Microhierax caerulescens |
| Collared Finchbill | Spizixos semitorques | Spizixos semitorques |
| Collared Flycatcher | Ficedula albicollis | Ficedula albicollis |
| Collared Gnatwren | Microbates collaris | Microbates collaris |
| Collared Inca | Coeligena torquata | Coeligena torquata |
| Collared Lark | Mirafra collaris | Mirafra collaris |
| Collared Lory | Phigys solitarius | Phigys solitarius |
| Collared Nightjar | Caprimulgus enarratus | Caprimulgus enarratus |
| Collared Owlet | Glaucidium brodiei | Glaucidium brodiei |
| Collared Petrel | Pterodroma brevipes | Pterodroma brevipes |
| Collared Plover | Charadrius collaris | Charadrius collaris |
| Collared Puffbird | Bucco capensis | Bucco capensis |
| Collared Redstart | Myioborus torquatus | Myioborus torquatus |
| Collared Sunbird | Anthreptes collaris | Anthreptes collaris |
| Collared Towhee | Pipilo ocai | Pipilo ocai |
| Collared Trogon | Trogon collaris | Trogon collaris |
| Colombian Crake | Porzana columbiana | Neocrex colombianus |
| Comb Duck | Sarkidiornis melanotos | Sarkidiornis melanotos |
| Comb-crested Jacana | Irediparra gallinacea | Irediparra gallinacea |
| Common Babbler | Turdoides caudatus | Turdoides caudatus |
| Common Bronzewing | Phaps chalcoptera | Phaps chalcoptera |
| Common Crane | Grus grus | Grus grus |
| Common Eider | Somateria mollissima | Somateria mollissima |
| Common Goldeneye | Bucephala clangula | Bucephala clangula |
| Common Gonolek | Laniarius barbarus | Laniarius barbarus |
| Common Grackle | Quiscalus quiscula | Quiscalus quiscula |
| Common Greenshank | Tringa nebularia | Tringa nebularia |
| Common Grenadier | Uraeginthus granatina | Uraeginthus granatina |
| Common Iora | Aegithina tiphia | Aegithina tiphia |
| Common Kestrel | Falco tinnunculus | Falco tinnunculus |
| Common Miner | Geositta cunicularia | Geositta cunicularia |
| Common Newtonia | Newtonia brunneicauda | Newtonia brunneicauda |
| Common Nighthawk | Chordeiles minor | Chordeiles minor |
| Common Pheasant | Phasianus colchicus | Phasianus colchicus |
| Common Pochard | Aythya ferina | Aythya ferina |
| Common Poorwill | Phalaenoptilus nuttallii | Phalaenoptilus nuttallii |
| Common Potoo | Nyctibius griseus | Nyctibius jamaicensis |
| Common Quail | Coturnix coturnix | Coturnix coturnix |
| Common Raven | Corvus corax | Corvus corax |
| Common Redshank | Tringa totanus | Tringa totanus |
| Common Redstart | Phoenicurus phoenicurus | Phoenicurus phoenicurus |
| Common Rosefinch | Carpodacus erythrinus | Carpodacus erythrinus |
| Common Sandpiper | Actitis hypoleucos | Tringa hypoleucos |
| Common Shelduck | Tadorna tadorna | Tadorna tadorna |
| Common Snipe | Gallinago gallinago | Gallinago gallinago |
| Common Starling | Sturnus vulgaris | Sturnus vulgaris |
| Common Stonechat | Saxicola torquata | Saxicola torquata |
| Common Tern | Sterna hirundo | Sterna hirundo |
| Common Waxbill | Estrilda astrild | Estrilda astrild |
| Common Yellowthroat | Geothlypis trichas | Geothlypis trichas |
| Comoro Bulbul | Hypsipetes parvirostris | Hypsipetes parvirostris |
| Comoro Drongo | Dicrurus fuscipennis | Dicrurus fuscipennis |
| Comoro Thrush | Turdus bewsheri | Turdus bewsheri |
| Compact Weaver | Ploceus superciliosus | Pachyphantes superciliosus |
| Cone-billed Tanager | Conothraupis mesoleuca | Conothraupis mesoleuca |
| Congo Martin | Riparia congica | Riparia congica |
| Congo Peafowl | Afropavo congensis | Afropavo congensis |
| Connecticut Warbler | Geothlypis agilis | Oporornis agilis |
| Cook's Petrel | Pterodroma cookii | Pterodroma cookii |
| Cooper's Hawk | Accipiter cooperii | Accipiter cooperii |
| Copper Pheasant | Syrmaticus soemmerringi | Syrmaticus soemmerringii |
| Copper-rumped Hummingbird | Amazilia tobaci | Amazilia tobaci |
| Coppery Emerald | Chlorostilbon russatus | Chlorostilbon russatus |
| Coppery Metaltail | Metallura theresiae | Metallura theresiae |
| Coppery Thorntail | Popelairia letitiae | Popelairia letitiae |
| Coppery-bellied Puffleg | Eriocnemis cupreoventris | Eriocnemis cupreoventris |
| Coppery-chested Jacamar | Galbula pastazae | Galbula pastazae |
| Coppery-headed Emerald | Elvira cupreiceps | Elvira cupreiceps |
| Coppery-tailed Coucal | Centropus cupreicaudus | Centropus cupreicaudus |
| Coraya Wren | Thryothorus coraya | Thryothorus coraya |
| Cordilleran Flycatcher | Empidonax occidentalis | Empidonax occidentalis |
| Corn Bunting | Emberiza calandra | Miliaria calandra |
| Corn Crake | Crex crex | Crex crex |
| Correndera Pipit | Anthus correndera | Anthus correndera |
| Corsican Nuthatch | Sitta whiteheadi | Sitta whiteheadi |
| Cory's Shearwater | Calonectris diomedea | Calonectris diomedea |
| Coscoroba Swan | Coscoroba coscoroba | Coscoroba coscoroba |
| Costa's Hummingbird | Calypte costae | Calypte costae |
| Couch's Kingbird | Tyrannus couchii | Tyrannus couchii |
| Cozumel Thrasher | Toxostoma guttatum | Toxostoma guttatum |
| Cozumel Vireo | Vireo bairdi | Vireo bairdi |
| Crab Plover | Dromas ardeola | Dromas ardeola |
| Crag Chilia | Chilia melanura | Chilia melanura |
| Crane Hawk | Geranospiza caerulescens | Geranospiza caerulescens |
| Craveri's Murrelet | Brachyramphus craveri | Synthliboramphus craveri |
| Cream-backed Woodpecker | Campephilus leucopogon | Campephilus leucopogon |
| Creamy-bellied Thrush | Turdus amaurochalinus | Turdus amaurochalinus |
| Creamy-breasted Canastero | Thripophaga dorbignyi | Asthenes dorbignyi |
| Creamy-crested Spinetail | Certhiaxis albicapilla | Cranioleuca albicapilla |
| Creamy-rumped Miner | Geositta isabellina | Geositta isabellina |
| Creamy-throated White-eye | Zosterops atriceps | Zosterops atriceps |
| Crescent Honeyeater | Phylidonyris pyrrhoptera | Phylidonyris pyrrhoptera |
| Crescent-chested Puffbird | Malacoptila striata | Malacoptila striata |
| Crescent-chested Warbler | Vermivora superciliosa | Parula superciliosa |
| Crescent-faced Antpitta | Grallaricula lineifrons | Grallaricula lineifrons |
| Crested Ant-Tanager | Habia cristata | Habia cristata |
| Crested Argus | Rheinartia ocellata | Rheinardia ocellata |
| Crested Auklet | Aethia cristatella | Aethia cristatella |
| Crested Bellbird | Oreoica gutturalis | Oreoica gutturalis |
| Crested Berrypecker | Paramythia montium | Paramythia montium |
| Crested Bobwhite | Colinus cristatus | Colinus cristatus |
| Crested Bunting | Melophus lathami | Melophus lathami |
| Crested Doradito | Pseudocolopteryx sclateri | Pseudocolopteryx sclateri |
| Crested Drongo | Dicrurus forficatus | Dicrurus forficatus |
| Crested Duck | Anas specularioides | Anas specularioides |
| Crested Finchbill | Spizixos canifrons | Spizixos canifrons |
| Crested Foliage-gleaner | Automolus dorsalis | Automolus dorsalis |
| Crested Francolin | Francolinus sephaena | Francolinus sephaena |
| Crested Gallito | Rhinocrypta lanceolata | Rhinocrypta lanceolata |
| Crested Guan | Penelope purpurascens | Penelope purpurascens |
| Crested Guineafowl | Guttera pucherani | Guttera pucherani |
| Crested Hornero | Furnarius cristatus | Furnarius cristatus |
| Crested Lark | Galerida cristata | Galerida cristata |
| Crested Malimbe | Malimbus malimbicus | Malimbus malimbicus |
| Crested Oropendola | Psarocolius decumanus | Psarocolius decumanus |
| Crested Owl | Lophostrix cristata | Lophostrix cristata |
| Crested Pigeon | Ocyphaps lophotes | Geophaps lophotes |
| Crested Pitohui | Pitohui cristatus | Pitohui cristatus |
| Crested Quetzal | Pharomachrus antisianus | Pharomachrus antisianus |
| Crested Shelduck | Tadorna cristata | Tadorna cristata |
| Crested Spinetail | Certhiaxis subcristata | Cranioleuca subcristata |
| Crested Tit | Parus cristatus | Parus cristatus |
| Crested White-eye | Lophozosterops dohertyi | Lophozosterops dohertyi |
| Cretzschmar's Bunting | Emberiza caesia | Emberiza caesia |
| Crimson Chat | Epthianura tricolor | Epthianura tricolor |
| Crimson Fruitcrow | Haematoderus militaris | Haematoderus militaris |
| Crimson Rosella | Platycercus elegans | Platycercus elegans |
| Crimson Seedcracker | Pyrenestes sanguineus | Pyrenestes sanguineus |
| Crimson Topaz | Topaza pella | Topaza pella |
| Crimson-backed Tanager | Ramphocelus dimidiatus | Ramphocelus dimidiatus |
| Crimson-bellied Woodpecker | Campephilus haematogaster | Campephilus haematogaster |
| Crimson-breasted Flowerpecker | Prionochilus percussus | Prionochilus percussus |
| Crimson-breasted Woodpecker | Picoides cathpharius | Dendrocopos cathpharius |
| Crimson-collared Grosbeak | Rhodothraupis celaeno | Rhodothraupis celaeno |
| Crimson-collared Tanager | Ramphocelus sanguinolentus | Ramphocelus sanguinolentus |
| Crimson-crested Woodpecker | Campephilus melanoleucos | Campephilus melanoleucos |
| Crimson-fronted Cardinal | Paroaria baeri | Paroaria baeri |
| Crimson-hooded Manakin | Pipra aureola | Pipra aureola |
| Crimson-mantled Woodpecker | Piculus rivolii | Piculus rivolii |
| Crimson-rumped Toucanet | Aulacorhynchus haematopygus | Aulacorhynchus haematopygus |
| Crimson-rumped Waxbill | Estrilda rhodopyga | Estrilda rhodopyga |
| Crimson-winged Finch | Rhodopechys sanguinea | Rhodopechys sanguinea |
| Crimson-winged Woodpecker | Picus puniceus | Picus puniceus |
| Crinkle-collared Manucode | Manucodia chalybatus | Manucodia chalybata |
| Crissal Thrasher | Toxostoma crissale | Toxostoma crissale |
| Croaking Cisticola | Cisticola natalensis | Cisticola natalensis |
| Crossley's Babbler | Mystacornis crossleyi | Mystacornis crossleyi |
| Crow-billed Drongo | Dicrurus annectans | Dicrurus annectans |
| Crowned Cormorant | Phalacrocorax coronatus | Phalacrocorax coronatus |
| Crowned Eagle | Spizaetus coronatus | Harpyhaliaetus coronatus |
| Crowned Hornbill | Tockus alboterminatus | Tockus alboterminatus |
| Crowned Sandgrouse | Pterocles coronatus | Pterocles coronatus |
| Crowned Slaty Flycatcher | Griseotyrannus aurantioatrocristatus | Griseotyrannus aurantioatrocristatus |
| Cuban Blackbird | Dives atroviolacea | Dives atroviolacea |
| Cuban Bullfinch | Melopyrrha nigra | Melopyrrha nigra |
| Cuban Crow | Corvus nasicus | Corvus nasicus |
| Cuban Emerald | Chlorostilbon ricordii | Chlorostilbon ricordii |
| Cuban Gnatcatcher | Polioptila lembeyei | Polioptila lembeyei |
| Cuban Grassquit | Tiaris canora | Tiaris canora |
| Cuban Green Woodpecker | Xiphidiopicus percussus | Xiphidiopicus percussus |
| Cuban Martin | Progne cryptoleuca | Progne cryptoleuca |
| Cuban Solitaire | Myadestes elisabeth | Myadestes elisabeth |
| Cuban Tody | Todus multicolor | Todus multicolor |
| Cuban Trogon | Priotelus temnurus | Priotelus temnurus |
| Cuban Vireo | Vireo gundlachii | Vireo gundlachii |
| Cundinamarca Antpitta | Grallaria kaestneri | Grallaria kaestneri |
| Curl-crested Aracari | Pteroglossus beauharnaesii | Pteroglossus beauharnaesii |
| Curl-crested Jay | Cyanocorax cristatellus | Cyanocorax cristatellus |
| Curl-crested Manucode | Manucodia comrii | Manucodia comrii |
| Curlew Sandpiper | Calidris ferruginea | Calidris ferruginea |
| Curve-billed Reedhaunter | Limnornis curvirostris | Limnornis curvirostris |
| Curve-billed Scythebill | Campylorhamphus procurvoides | Campylorhamphus procurvoides |
| Curve-billed Thrasher | Toxostoma curvirostre | Toxostoma curvirostre |
| Curve-billed Tinamou | Nothoprocta curvirostris | Nothoprocta curvirostris |
| Cyprus Warbler | Sylvia melanothorax | Sylvia melanothorax |
| Cyprus Wheatear | Oenanthe cypriaca | Oenanthe cypriaca |
| Dalmatian Pelican | Pelecanus crispus | Pelecanus crispus |
| Damar Flycatcher | Ficedula henrici | Ficedula henrici |
| Damara Tern | Sterna balaenarum | Sterna balaenarum |
| Dark Chanting-Goshawk | Melierax metabates | Melierax metabates |
| Dark-bellied Cinclodes | Cinclodes patagonicus | Cinclodes patagonicus |
| Dark-billed Cuckoo | Coccyzus melacoryphus | Coccyzus melacoryphus |
| Dark-breasted Spinetail | Synallaxis albigularis | Synallaxis albigularis |
| Dark-eyed Junco | Junco hyemalis | Junco hyemalis |
| Dark-headed Oriole | Oriolus monacha | Oriolus monacha |
| Dark-throated Oriole | Oriolus xanthonotus | Oriolus xanthonotus |
| Dark-throated Seedeater | Sporophila ruficollis | Sporophila ruficollis |
| Dark-winged Miner | Geositta saxicolina | Geositta saxicolina |
| Dartford Warbler | Sylvia undata | Sylvia undata |
| Darwin's Nothura | Nothura darwinii | Nothura darwinii |
| Daurian Jackdaw | Corvus dauuricus | Corvus dauuricus |
| Daurian Partridge | Perdix dauuricae | Perdix dauurica |
| Daurian Redstart | Phoenicurus auroreus | Phoenicurus auroreus |
| Dead Sea Sparrow | Passer moabiticus | Passer moabiticus |
| Degodi Lark | Mirafra degodiensis | Mirafra degodiensis |
| Deignan's Babbler | Stachyris rodolphei | Stachyris rodolphei |
| Demoiselle Crane | Anthropoides virgo | Grus virgo |
| Desert Cisticola | Cisticola aridula | Cisticola aridulus |
| Desert Lark | Ammomanes deserti | Ammomanes deserti |
| Desert Sparrow | Passer simplex | Passer simplex |
| Desert Wheatear | Oenanthe deserti | Oenanthe deserti |
| Diademed Tanager | Stephanophorus diadematus | Stephanophorus diadematus |
| Diamond Dove | Geopelia cuneata | Geopelia cuneata |
| Diard's Trogon | Harpactes diardii | Harpactes diardii |
| Dickcissel | Spiza americana | Spiza americana |
| Dickinson's Kestrel | Falco dickinsoni | Falco dickinsoni |
| Dinelli's Doradito | Pseudocolopteryx dinellianus | Pseudocolopteryx dinellianus |
| Doria's Goshawk | Accipiter doriae | Megatriorchis doriae |
| Dot-backed Antbird | Hylophylax punctulata | Hylophylax punctulata |
| Dot-eared Coquette | Lophornis gouldii | Lophornis gouldii |
| Dot-fronted Woodpecker | Veniliornis frontalis | Veniliornis frontalis |
| Dot-winged Antwren | Microrhopias quixensis | Microrhopias quixensis |
| Dot-winged Crake | Porzana spiloptera | Porzana spiloptera |
| Dotted Tanager | Tangara varia | Tangara varia |
| Double-banded Greytail | Xenerpestes minlosi | Xenerpestes minlosi |
| Double-banded Plover | Charadrius bicinctus | Charadrius bicinctus |
| Double-banded Sandgrouse | Pterocles bicinctus | Pterocles bicinctus |
| Double-barred Finch | Poephila bichenovii | Taeniopygia bichenovii |
| Double-collared Seedeater | Sporophila caerulescens | Sporophila caerulescens |
| Double-crested Cormorant | Phalacrocorax auritus | Phalacrocorax auritus |
| Double-spurred Francolin | Francolinus bicalcaratus | Francolinus bicalcaratus |
| Double-toothed Barbet | Lybius bidentatus | Lybius bidentatus |
| Double-toothed Kite | Harpagus bidentatus | Harpagus bidentatus |
| Downy Woodpecker | Picoides pubescens | Picoides pubescens |
| Drab Hemispingus | Hemispingus xanthophthalmus | Hemispingus xanthophthalmus |
| Drab Seedeater | Sporophila simplex | Sporophila simplex |
| Drab Whistler | Pachycephala griseonota | Pachycephala griseonota |
| Drakensberg Siskin | Serinus symonsi | Serinus symonsi |
| Duchess Lorikeet | Charmosyna margarethae | Charmosyna margarethae |
| Ducorps's Cockatoo | Cacatua ducorpsii | Cacatua ducorpsii |
| Dulit Frogmouth | Batrachostomus harterti | Batrachostomus harterti |
| Dull Flycatcher | Myiagra hebetior | Myiagra hebetior |
| Dull-capped Attila | Attila bolivianus | Attila bolivianus |
| Dull-mantled Antbird | Myrmeciza laemosticta | Myrmeciza laemosticta |
| Dune Lark | Certhilauda erythrochlamys | Certhilauda erythrochlamys |
| Dunlin | Calidris alpina | Calidris alpina |
| Dunn's Lark | Eremalauda dunni | Eremalauda dunni |
| Dusky Antbird | Cercomacra tyrannina | Cercomacra tyrannina |
| Dusky Babbler | Turdoides tenebrosus | Turdoides tenebrosus |
| Dusky Broadbill | Corydon sumatranus | Corydon sumatranus |
| Dusky Crimson-wing | Cryptospiza jacksoni | Cryptospiza jacksoni |
| Dusky Fantail | Rhipidura tenebrosa | Rhipidura tenebrosa |
| Dusky Friarbird | Philemon fuscicapillus | Philemon fuscicapillus |
| Dusky Hummingbird | Cynanthus sordidus | Cynanthus sordidus |
| Dusky Indigobird | Vidua purpurascens | Vidua purpurascens |
| Dusky Lark | Pinarocorys nigricans | Pinarocorys nigricans |
| Dusky Long-tailed Cuckoo | Cercococcyx mechowi | Cercococcyx mechowi |
| Dusky Lory | Pseudeos fuscata | Pseudeos fuscata |
| Dusky Moorhen | Gallinula tenebrosa | Gallinula tenebrosa |
| Dusky Nightjar | Caprimulgus saturatus | Caprimulgus saturatus |
| Dusky Parrot | Pionus fuscus | Pionus fuscus |
| Dusky Pigeon | Columba goodsoni | Columba goodsoni |
| Dusky Piha | Lipaugus fuscocinereus | Lipaugus fuscocinereus |
| Dusky Purpletuft | Iodopleura fusca | Iodopleura fusca |
| Dusky Robin | Petroica vittata | Melanodryas vittata |
| Dusky Spinetail | Synallaxis moesta | Synallaxis moesta |
| Dusky Starfrontlet | Coeligena orina | Coeligena orina |
| Dusky Sunbird | Nectarinia fusca | Nectarinia fusca |
| Dusky Thrush | Turdus naumanni | Turdus naumanni |
| Dusky Tit | Parus funereus | Parus funereus |
| Dusky Warbler | Phylloscopus fuscatus | Phylloscopus fuscatus |
| Dusky-backed Jacamar | Brachygalba salmoni | Brachygalba salmoni |
| Dusky-billed Parrotlet | Forpus sclateri | Forpus sclateri |
| Dusky-billed Woodcreeper | Xiphorhynchus eytoni | Xiphorhynchus eytoni |
| Dusky-capped Greenlet | Hylophilus hypoxanthus | Hylophilus hypoxanthus |
| Dusky-chested Flycatcher | Myiozetetes luteiventris | Myiozetetes luteiventris |
| Dusky-faced Tanager | Mitrospingus cassinii | Mitrospingus cassinii |
| Dusky-green Oropendola | Psarocolius atrovirens | Psarocolius atrovirens |
| Dusky-legged Guan | Penelope obscura | Penelope obscura |
| Dusky-tailed Antbird | Drymophila malura | Drymophila malura |
| Dusky-tailed Canastero | Thripophaga humicola | Asthenes humicola |
| Dusky-tailed Flatbill | Ramphotrigon fuscicauda | Ramphotrigon fuscicauda |
| Dusky-throated Hermit | Phaethornis squalidus | Phaethornis squalidus |
| Dwarf Cassowary | Casuarius bennetti | Casuarius bennetti |
| Dwarf Cuckoo | Coccyzus pumilus | Coccyzus pumilus |
| Dwarf Jay | Cyanolyca nana | Cyanolyca nana |
| Dwarf Kingfisher | Ceyx lepidus | Ispidina lecontei |
| Dwarf Tinamou | Taoniscus nanus | Taoniscus nanus |
| Dwarf Vireo | Vireo nelsoni | Vireo nelsoni |
| Eared Dove | Zenaida auriculata | Zenaida auriculata |
| Eared Poorwill | Otophanes mcleodii | Nyctiphrynus mcleodii |
| Eared Trogon | Euptilotis neoxenus | Euptilotis neoxenus |
| Eastern Bluebird | Sialia sialis | Sialia sialis |
| Eastern Double-collared Sunbird | Nectarinia mediocris | Nectarinia mediocris |
| Eastern Grey Plantain-eater | Crinifer zonurus | Crinifer zonurus |
| Eastern Kingbird | Tyrannus tyrannus | Tyrannus tyrannus |
| Eastern Meadowlark | Sturnella magna | Sturnella magna |
| Eastern Nicator | Nicator gularis | Nicator gularis |
| Eastern Phoebe | Sayornis phoebe | Sayornis phoebe |
| Eastern Riflebird | Ptiloris intercedens | Ptiloris intercedens |
| Eastern Rosella | Platycercus eximius | Platycercus eximius |
| Eastern Spinebill | Acanthorhynchus tenuirostris | Acanthorhynchus tenuirostris |
| Eastern Whipbird | Psophodes olivaceus | Psophodes olivaceus |
| Eastern Wood-Pewee | Contopus virens | Contopus virens |
| Eaton's Pintail | Anas eatoni | Anas eatoni |
| Eclectus Parrot | Eclectus roratus | Eclectus roratus |
| Ecuadorian Piculet | Picumnus sclateri | Picumnus sclateri |
| Ecuadorian Piedtail | Phlogophilus hemileucurus | Phlogophilus hemileucurus |
| Ecuadorian Tyrannulet | Phylloscartes gualaquizae | Phylloscartes gualaquizae |
| Edible-nest Swiftlet | Aerodramus fuciphagus | Collocalia fuciphaga |
| Egyptian Goose | Alopochen aegyptiacus | Alopochen aegyptiacus |
| Egyptian Nightjar | Caprimulgus aegyptius | Caprimulgus aegyptius |
| Egyptian Vulture | Neophron percnopterus | Neophron percnopterus |
| El Oro Parakeet | Pyrrhura orcesi | Pyrrhura orcesi |
| Elegant Crested-Tinamou | Eudromia elegans | Eudromia elegans |
| Elegant Parrot | Neophema elegans | Neophema elegans |
| Elegant Pitta | Pitta elegans | Pitta elegans |
| Elegant Quail | Lophortyx douglasii | Callipepla douglasii |
| Elegant Tern | Thalasseus elegans | Sterna elegans |
| Elegant Tit | Parus elegans | Parus elegans |
| Elegant Trogon | Trogon elegans | Trogon elegans |
| Elegant Woodcreeper | Xiphorhynchus elegans | Xiphorhynchus elegans |
| Eleonora's Falcon | Falco eleonorae | Falco eleonorae |
| Elepaio | Chasiempis sandwichensis | Chasiempis sandwichensis |
| Elf Owl | Micrathene whitneyi | Micrathene whitneyi |
| Elliot's Pheasant | Syrmaticus ellioti | Syrmaticus ellioti |
| Elliot's Woodpecker | Dendropicos elliotii | Dendropicos elliotii |
| Elusive Antpitta | Grallaria eludens | Grallaria eludens |
| Emerald Dove | Chalcophaps indica | Chalcophaps indica |
| Emerald Tanager | Tangara florida | Tangara florida |
| Emerald Toucanet | Aulacorhynchus prasinus | Aulacorhynchus prasinus |
| Emerald-bellied Puffleg | Eriocnemis alinae | Eriocnemis alinae |
| Emerald-chinned Hummingbird | Abeillia abeillei | Abeillia abeillei |
| Emin's Shrike | Lanius gubernator | Lanius gubernator |
| Emperor Goose | Anser canagicus | Anser canagica |
| Emperor Penguin | Aptenodytes forsteri | Aptenodytes forsteri |
| Empress Brilliant | Heliodoxa imperatrix | Heliodoxa imperatrix |
| Emu | Dromaius novaehollandiae | Dromaius novaehollandiae |
| Enggano White-eye | Zosterops salvadorii | Zosterops salvadorii |
| Epaulet Oriole | Icterus cayanensis | Icterus cayanensis |
| Equatorial Greytail | Xenerpestes singularis | Xenerpestes singularis |
| Erckel's Francolin | Francolinus erckelii | Francolinus erckelii |
| Eskimo Curlew | Numenius borealis | Numenius borealis |
| Esmeraldas Antbird | Myrmeciza nigricauda | Myrmeciza nigricauda |
| Ethiopian Swallow | Hirundo aethiopica | Hirundo aethiopica |
| Euler's Flycatcher | Lathrotriccus euleri | Lathrotriccus euleri |
| Eungella Honeyeater | Meliphaga hindwoodi | Lichenostomus hindwoodi |
| Eurasian Tree Sparrow | Passer montanus | Passer montanus |
| Eurasian Woodcock | Scolopax rusticola | Scolopax rusticola |
| European Robin | Erithacus rubecula | Erithacus rubecula |
| European Roller | Coracias garrulus | Coracias garrulus |
| European Serin | Serinus serinus | Serinus serinus |
| Evening Grosbeak | Coccothraustes vespertinus | Hesperiphona vespertina |
| Everett's White-eye | Zosterops everetti | Zosterops everetti |
| Evergreen Forest Warbler | Bradypterus mariae | Bradypterus mariae |
| Eye-ringed Flatbill | Rhynchocyclus brevirostris | Rhynchocyclus brevirostris |
| Eye-ringed Thistletail | Schizoeaca palpebralis | Schizoeaca palpebralis |
| Fairy Lorikeet | Charmosyna pulchella | Charmosyna pulchella |
| Fairy Martin | Hirundo ariel | Hirundo ariel |
| Fairy Pitta | Pitta nympha | Pitta nympha |
| Fairy Prion | Pachyptila turtur | Pachyptila turtur |
| Fairy Tern | Sterna nereis | Sterna nereis |
| Familiar Chat | Cercomela familiaris | Cercomela familiaris |
| Fan-tailed Berrypecker | Melanocharis versteri | Melanocharis versteri |
| Fan-tailed Cuckoo | Cacomantis pyrrhophanus | Cacomantis flabelliformis |
| Fan-tailed Grassbird | Schoenicola brevirostris | Schoenicola brevirostris |
| Fan-tailed Raven | Corvus rhipidurus | Corvus rhipidurus |
| Far Eastern Curlew | Numenius madagascariensis | Numenius madagascariensis |
| Fasciated Antshrike | Cymbilaimus lineatus | Cymbilaimus lineatus |
| Fasciated Wren | Campylorhynchus fasciatus | Campylorhynchus fasciatus |
| Fawn-breasted Bowerbird | Chlamydera cerviniventris | Chlamydera cerviniventris |
| Fawn-breasted Brilliant | Heliodoxa rubinoides | Heliodoxa rubinoides |
| Fawn-breasted Tanager | Pipraeidea melanonota | Pipraeidea melanonota |
| Fawn-breasted Thrush | Zoothera machiki | Zoothera machiki |
| Fawn-breasted Waxbill | Estrilda paludicola | Estrilda paludicola |
| Fawn-breasted Whistler | Pachycephala orpheus | Pachycephala orpheus |
| Fawn-breasted Wren | Thryothorus guarayanus | Thryothorus guarayanus |
| Fearful Owl | Nesasio solomonensis | Nesasio solomonensis |
| Fernandina's Flicker | Colaptes fernandinae | Colaptes fernandinae |
| Fernando Po Speirops | Speirops brunnea | Speirops brunneus |
| Ferruginous Antbird | Drymophila ferruginea | Drymophila ferruginea |
| Ferruginous Flycatcher | Muscicapa ferruginea | Muscicapa ferruginea |
| Ferruginous Hawk | Buteo regalis | Buteo regalis |
| Ferruginous-backed Antbird | Myrmeciza ferruginea | Myrmeciza ferruginea |
| Festive Coquette | Lophornis chalybea | Lophornis chalybeus |
| Field Sparrow | Spizella pusilla | Spizella pusilla |
| Fieldfare | Turdus pilaris | Turdus pilaris |
| Fiery Minivet | Pericrocotus igneus | Pericrocotus igneus |
| Fiery Topaz | Topaza pyra | Topaza pyra |
| Fiery-billed Aracari | Pteroglossus frantzii | Pteroglossus frantzii |
| Fiery-capped Manakin | Machaeropterus pyrocephalus | Machaeropterus pyrocephalus |
| Fiery-tailed Awlbill | Avocettula recurvirostris | Avocettula recurvirostris |
| Fiery-throated Fruiteater | Pipreola chlorolepidota | Pipreola chlorolepidota |
| Fiery-throated Hummingbird | Panterpe insignis | Panterpe insignis |
| Fiji Goshawk | Accipiter rufitorques | Accipiter rufitorques |
| Fiji Shrikebill | Clytorhynchus vitiensis | Clytorhynchus vitiensis |
| Fine-barred Piculet | Picumnus subtilis | Picumnus subtilis |
| Fine-spotted Woodpecker | Campethera punctuligera | Campethera punctuligera |
| Finsch's Euphonia | Euphonia finschi | Euphonia finschi |
| Finsch's Francolin | Francolinus finschi | Francolinus finschi |
| Finsch's Wheatear | Oenanthe finschii | Oenanthe finschii |
| Fire-bellied Woodpecker | Dendropicos pyrrhogaster | Dendropicos pyrrhogaster |
| Fire-capped Tit | Cephalopyrus flammiceps | Cephalopyrus flammiceps |
| Fire-crested Alethe | Alethe diademata | Alethe castanea |
| Fire-eyed Diucon | Xolmis pyrope | Xolmis pyrope |
| Fire-fronted Bishop | Euplectes diademata | Euplectes diadematus |
| Fire-tailed Myzornis | Myzornis pyrrhoura | Myzornis pyrrhoura |
| Fire-tailed Sunbird | Aethopyga ignicauda | Aethopyga ignicauda |
| Fire-throated Metaltail | Metallura eupogon | Metallura eupogon |
| Fire-tufted Barbet | Psilopogon pyrolophus | Psilopogon pyrolophus |
| Firecrest | Regulus ignicapillus | Regulus ignicapillus |
| Fiscal Flycatcher | Melaenornis silens | Sigelus silens |
| Fischer's Greenbul | Phyllastrephus fischeri | Phyllastrephus fischeri |
| Fischer's Lovebird | Agapornis fischeri | Agapornis fischeri |
| Fischer's Sparrow-Lark | Eremopterix leucopareia | Eremopterix leucopareia |
| Fischer's Starling | Spreo fischeri | Spreo fischeri |
| Fischer's Turaco | Tauraco fischeri | Tauraco fischeri |
| Fish Crow | Corvus ossifragus | Corvus ossifragus |
| Five-striped Sparrow | Aimophila quinquestriata | Aimophila quinquestriata |
| Flame Robin | Petroica phoenicea | Petroica phoenicea |
| Flame-crested Tanager | Tachyphonus cristatus | Tachyphonus cristatus |
| Flame-faced Tanager | Tangara parzudakii | Tangara parzudakii |
| Flame-rumped Sapphire | Hylocharis pyropygia | Hylocharis pyropygia |
| Flame-rumped Tanager | Ramphocelus flammigerus | Ramphocelus flammigerus |
| Flame-throated Warbler | Vermivora gutteralis | Parula gutturalis |
| Flaming Sunbird | Aethopyga flagrans | Aethopyga flagrans |
| Flammulated Flycatcher | Deltarhynchus flammulatus | Deltarhynchus flammulatus |
| Flammulated Owl | Otus flammeolus | Otus flammeolus |
| Flammulated Treehunter | Thripadectes flammulatus | Thripadectes flammulatus |
| Flappet Lark | Mirafra rufocinnamomea | Mirafra rufocinnamomea |
| Flat-billed Kingfisher | Halcyon recurvirostris | Todirhamphus recurvirostris |
| Flat-billed Vireo | Vireo nanus | Vireo nanus |
| Flavescent Bulbul | Pycnonotus flavescens | Pycnonotus flavescens |
| Flavescent Flycatcher | Myiophobus flavicans | Myiophobus flavicans |
| Flavescent Warbler | Basileuterus flaveolus | Basileuterus flaveolus |
| Flightless Cormorant | Nannopterum harrisi | Phalacrocorax harrisi |
| Flores Crow | Corvus florensis | Corvus florensis |
| Flores Minivet | Pericrocotus lansbergei | Pericrocotus lansbergei |
| Fluffy-backed Tit-Babbler | Macronous ptilosus | Macronous ptilosus |
| Flutist Wren | Microcerculus ustulatus | Microcerculus ustulatus |
| Fluttering Shearwater | Puffinus gavia | Puffinus gavia |
| Foothill Antwren | Myrmotherula spodionota | Myrmotherula spodionota |
| Forbes's Blackbird | Curaeus forbesi | Curaeus forbesi |
| Forest Bittern | Zonerodius heliosylus | Zonerodius heliosylus |
| Forest Canary | Serinus scotops | Serinus scotops |
| Forest Elaenia | Myiopagis gaimardii | Myiopagis gaimardii |
| Forest Kingfisher | Halcyon macleayii | Todirhamphus macleayii |
| Forest Owlet | Athene blewitti | Athene blewitti |
| Forest Raven | Corvus tasmanicus | Corvus tasmanicus |
| Forest Swallow | Hirundo fuliginosa | Hirundo fuliginosa |
| Forest Thrush | Cichlherminia lherminieri | Cichlherminia lherminieri |
| Forest Wagtail | Dendronanthus indicus | Dendronanthus indicus |
| Forest Weaver | Ploceus bicolor | Ploceus bicolor |
| Fork-tailed Drongo | Dicrurus adsimilis | Dicrurus adsimilis |
| Fork-tailed Emerald | Chlorostilbon canivetii | Chlorostilbon canivetii |
| Fork-tailed Flycatcher | Tyrannus savana | Tyrannus savana |
| Fork-tailed Sunbird | Aethopyga christinae | Aethopyga christinae |
| Fork-tailed Swift | Apus pacificus | Apus pacificus |
| Fork-tailed Woodnymph | Thalurania furcata | Thalurania furcata |
| Formosan Barwing | Actinodura morrisoniana | Actinodura morrisoniana |
| Formosan Yuhina | Yuhina brunneiceps | Yuhina brunneiceps |
| Forster's Tern | Sterna forsteri | Sterna forsteri |
| Forty-spotted Pardalote | Pardalotus quadragintus | Pardalotus quadragintus |
| Four-banded Sandgrouse | Pterocles quadricinctus | Pterocles quadricinctus |
| Fox Kestrel | Falco alopex | Falco alopex |
| Fox Sparrow | Passerella iliaca | Passerella iliaca |
| Fox's Weaver | Ploceus spekeoides | Ploceus spekeoides |
| Foxy Cisticola | Cisticola troglodytes | Cisticola troglodytes |
| Franklin's Gull | Larus pipixcan | Larus pipixcan |
| Freckle-breasted Thornbird | Phacellodomus striaticollis | Phacellodomus striaticollis |
| Freckled Duck | Stictonetta naevosa | Stictonetta naevosa |
| Freckled Nightjar | Caprimulgus tristigma | Caprimulgus tristigma |
| Friedmann's Lark | Mirafra pulpa | Mirafra pulpa |
| Friendly Fantail | Rhipidura albolimbata | Rhipidura albolimbata |
| Frilled Coquette | Lophornis magnifica | Lophornis magnificus |
| Fulvous Owl | Strix fulvescens | Strix fulvescens |
| Fulvous Shrike-Tanager | Lanio fulvus | Lanio fulvus |
| Fulvous-bellied Antpitta | Hylopezus fulviventris | Hylopezus dives |
| Fulvous-breasted Flatbill | Rhynchocyclus fulvipectus | Rhynchocyclus fulvipectus |
| Fulvous-chinned Nunlet | Nonnula sclateri | Nonnula sclateri |
| Fulvous-crested Tanager | Tachyphonus surinamus | Tachyphonus surinamus |
| Fulvous-dotted Treerunner | Margarornis stellatus | Margarornis stellatus |
| Fulvous-headed Tanager | Thlypopsis fulviceps | Thlypopsis fulviceps |
| Fulvous-vented Euphonia | Euphonia fulvicrissa | Euphonia fulvicrissa |
| Fuscous Flycatcher | Cnemotriccus fuscatus | Cnemotriccus fuscatus |
| Fuscous Honeyeater | Meliphaga fusca | Lichenostomus fuscus |
| Gabar Goshawk | Micronisus gabar | Micronisus gabar |
| Gabon Boubou | Laniarius bicolor | Laniarius bicolor |
| Gabon Coucal | Centropus anselli | Centropus anselli |
| Gabon Woodpecker | Dendropicos gabonensis | Dendropicos gabonensis |
| Gadwall | Anas strepera | Anas strepera |
| Galah | Eolophus roseicapillus | Eolophus roseicapillus |
| Galapagos Dove | Zenaida galapagoensis | Zenaida galapagoensis |
| Galapagos Hawk | Buteo galapagoensis | Buteo galapagoensis |
| Galapagos Mockingbird | Nesomimus trifasciatus | Nesomimus parvulus |
| Galapagos Penguin | Spheniscus mendiculus | Spheniscus mendiculus |
| Galapagos Petrel | Pterodroma phaeopygia | Pterodroma phaeopygia |
| Galapagos Rail | Laterallus spilonotus | Laterallus spilonotus |
| Gambel's Quail | Lophortyx gambelii | Callipepla gambelii |
| Gang-gang Cockatoo | Callocephalon fimbriatum | Callocephalon fimbriatum |
| Garden Bulbul | Pycnonotus barbatus | Pycnonotus barbatus |
| Garden Emerald | Chlorostilbon assimilis | Chlorostilbon assimilis |
| Garden Warbler | Sylvia borin | Sylvia borin |
| Garganey | Anas querquedula | Anas querquedula |
| Garnet Pitta | Pitta granatina | Pitta granatina |
| Garnet-throated Hummingbird | Lamprolaima rhami | Lamprolaima rhami |
| Gentoo Penguin | Pygoscelis papua | Pygoscelis papua |
| Germain's Peacock-Pheasant | Polyplectron germaini | Polyplectron germaini |
| Giant Antpitta | Grallaria gigantea | Grallaria gigantea |
| Giant Antshrike | Batara cinerea | Batara cinerea |
| Giant Babax | Babax waddelli | Babax waddelli |
| Giant Conebill | Oreomanes fraseri | Oreomanes fraseri |
| Giant Coot | Fulica gigantea | Fulica gigantea |
| Giant Cowbird | Scaphidura oryzivora | Scaphidura oryzivora |
| Giant Hummingbird | Patagona gigas | Patagona gigas |
| Giant Ibis | Thaumatibis gigantea | Pseudibis gigantea |
| Giant Kingbird | Tyrannus cubensis | Tyrannus cubensis |
| Giant Kingfisher | Megaceryle maxima | Megaceryle maxima |
| Giant Nuthatch | Sitta magna | Sitta magna |
| Giant Pitta | Pitta caerulea | Pitta caerulea |
| Giant Snipe | Gallinago undulata | Gallinago undulata |
| Giant Weaver | Ploceus grandis | Ploceus grandis |
| Giant Wren | Campylorhynchus chiapensis | Campylorhynchus chiapensis |
| Gila Woodpecker | Melanerpes uropygialis | Melanerpes uropygialis |
| Gilded Hummingbird | Hylocharis chrysura | Hylocharis chrysura |
| Gillett's Lark | Mirafra gilletti | Mirafra gilletti |
| Gilt-edged Tanager | Tangara cyanoventris | Tangara cyanoventris |
| Glaucous Gull | Larus hyperboreus | Larus hyperboreus |
| Glaucous Macaw | Anodorhynchus glaucus | Anodorhynchus glaucus |
| Glaucous Tanager | Thraupis glaucocolpa | Thraupis glaucocolpa |
| Glaucous-winged Gull | Larus glaucescens | Larus glaucescens |
| Glistening-green Tanager | Chlorochrysa phoenicotis | Chlorochrysa phoenicotis |
| Glittering-bellied Emerald | Chlorostilbon aureoventris | Chlorostilbon aureoventris |
| Glittering-throated Emerald | Amazilia fimbriata | Amazilia fimbriata |
| Glossy Antshrike | Sakesphorus luctuosus | Sakesphorus luctuosus |
| Glossy Ibis | Plegadis falcinellus | Plegadis falcinellus |
| Glossy-backed Becard | Pachyramphus surinamus | Pachyramphus surinamus |
| Glossy-black Thrush | Turdus serranus | Turdus serranus |
| Glossy-mantled Manucode | Manucodia ater | Manucodia atra |
| Glow-throated Hummingbird | Selasphorus ardens | Selasphorus ardens |
| Glowing Puffleg | Eriocnemis vestitus | Eriocnemis vestitus |
| Goeldi's Antbird | Myrmeciza goeldii | Myrmeciza goeldii |
| Gold-ringed Tanager | Bangsia aureocincta | Bangsia aureocincta |
| Gold-whiskered Barbet | Megalaima chrysopogon | Megalaima chrysopogon |
| Goldcrest | Regulus regulus | Regulus regulus |
| Golden Bulbul | Hypsipetes affinis | Alophoixus affinis |
| Golden Dove | Ptilinopus luteovirens | Ptilinopus luteovirens |
| Golden Eagle | Aquila chrysaetos | Aquila chrysaetos |
| Golden Greenbul | Calyptocichla serina | Calyptocichla serina |
| Golden Nightjar | Caprimulgus eximius | Caprimulgus eximius |
| Golden Palm Weaver | Ploceus bojeri | Ploceus bojeri |
| Golden Pheasant | Chrysolophus pictus | Chrysolophus pictus |
| Golden Pipit | Tmetothylacus tenellus | Tmetothylacus tenellus |
| Golden Swallow | Tachycineta euchrysea | Tachycineta euchrysea |
| Golden Tanager | Tangara arthus | Tangara arthus |
| Golden Vireo | Vireo hypochryseus | Vireo hypochryseus |
| Golden Whistler | Pachycephala pectoralis | Pachycephala pectoralis |
| Golden White-eye | Cleptornis marchei | Cleptornis marchei |
| Golden-backed Bishop | Euplectes aurea | Euplectes aureus |
| Golden-backed Honeyeater | Melithreptus laetior | Melithreptus laetior |
| Golden-bellied Flycatcher | Myiodynastes hemichrysus | Myiodynastes hemichrysus |
| Golden-bellied Starfrontlet | Coeligena bonapartei | Coeligena bonapartei |
| Golden-bellied Warbler | Basileuterus chrysogaster | Basileuterus chrysogaster |
| Golden-bellied White-eye | Zosterops uropygialis | Zosterops uropygialis |
| Golden-billed Saltator | Saltator aurantiirostris | Saltator aurantiirostris |
| Golden-breasted Fruiteater | Pipreola aureopectus | Pipreola aureopectus |
| Golden-breasted Fulvetta | Alcippe chrysotis | Alcippe chrysotis |
| Golden-breasted Puffleg | Eriocnemis mosquera | Eriocnemis mosquera |
| Golden-breasted Starling | Cosmopsarus regius | Cosmopsarus regius |
| Golden-browed Chlorophonia | Chlorophonia callophrys | Chlorophonia callophrys |
| Golden-browed Warbler | Basileuterus belli | Basileuterus belli |
| Golden-cheeked Warbler | Dendroica chrysopareia | Dendroica chrysoparia |
| Golden-cheeked Woodpecker | Melanerpes chrysogenys | Melanerpes chrysogenys |
| Golden-chested Tanager | Bangsia rothschildi | Bangsia rothschildi |
| Golden-chevroned Tanager | Thraupis ornata | Thraupis ornata |
| Golden-collared Tanager | Iridosornis jelskii | Iridosornis jelskii |
| Golden-collared Toucanet | Selenidera reinwardtii | Selenidera reinwardtii |
| Golden-collared Woodpecker | Veniliornis cassini | Veniliornis cassini |
| Golden-crowned Flycatcher | Myiodynastes chrysocephalus | Myiodynastes chrysocephalus |
| Golden-crowned Kinglet | Regulus satrapa | Regulus satrapa |
| Golden-crowned Manakin | Pipra vilasboasi | Pipra vilasboasi |
| Golden-crowned Spadebill | Platyrinchus coronatus | Platyrinchus coronatus |
| Golden-crowned Sparrow | Zonotrichia atricapilla | Zonotrichia atricapilla |
| Golden-crowned Tanager | Iridosornis rufivertex | Iridosornis rufivertex |
| Golden-crowned Warbler | Basileuterus culicivorus | Basileuterus culicivorus |
| Golden-eared Tanager | Tangara chrysotis | Tangara chrysotis |
| Golden-faced Tyrannulet | Zimmerius viridiflavus | Zimmerius chrysops |
| Golden-fronted Greenlet | Hylophilus aurantiifrons | Hylophilus aurantiifrons |
| Golden-fronted Leafbird | Chloropsis aurifrons | Chloropsis aurifrons |
| Golden-fronted Redstart | Myioborus ornatus | Myioborus ornatus |
| Golden-fronted Woodpecker | Melanerpes aurifrons | Melanerpes aurifrons |
| Golden-green Woodpecker | Piculus chrysochloros | Piculus chrysochloros |
| Golden-headed Manakin | Pipra erythrocephala | Pipra erythrocephala |
| Golden-headed Quetzal | Pharomachrus auriceps | Pharomachrus auriceps |
| Golden-naped Barbet | Megalaima pulcherrima | Megalaima pulcherrima |
| Golden-naped Tanager | Tangara ruficervix | Tangara ruficervix |
| Golden-naped Woodpecker | Melanerpes chrysauchen | Melanerpes chrysauchen |
| Golden-olive Woodpecker | Piculus rubiginosus | Piculus rubiginosus |
| Golden-rumped Euphonia | Euphonia aureata | Euphonia cyanocephala |
| Golden-shouldered Parrot | Psephotus chrysopterygius | Psephotus chrysopterygius |
| Golden-sided Euphonia | Euphonia cayennensis | Euphonia cayennensis |
| Golden-spangled Piculet | Picumnus exilis | Picumnus exilis |
| Golden-tailed Parrotlet | Touit surda | Touit surda |
| Golden-tailed Sapphire | Chrysuronia oenone | Chrysuronia oenone |
| Golden-tailed Woodpecker | Campethera abingoni | Campethera abingoni |
| Golden-throated Barbet | Megalaima franklinii | Megalaima franklinii |
| Golden-tufted Grackle | Macroagelaius imthurni | Macroagelaius imthurni |
| Golden-winged Cacique | Cacicus chrysopterus | Cacicus chrysopterus |
| Golden-winged Grosbeak | Rhynchostruthus socotranus | Rhynchostruthus socotranus |
| Golden-winged Manakin | Masius chrysopterus | Masius chrysopterus |
| Golden-winged Parakeet | Brotogeris chrysopterus | Brotogeris chrysopterus |
| Golden-winged Sparrow | Arremon schlegeli | Arremon schlegeli |
| Golden-winged Sunbird | Nectarinia reichenowi | Nectarinia reichenowi |
| Golden-winged Warbler | Vermivora chrysoptera | Vermivora chrysoptera |
| Goldie's Lorikeet | Trichoglossus goldiei | Psitteuteles goldiei |
| Goliath Heron | Ardea goliath | Ardea goliath |
| Gorgeted Sunangel | Heliangelus strophianus | Heliangelus strophianus |
| Gorgeted Woodstar | Acestrura heliodor | Acestrura heliodor |
| Gosling's Apalis | Apalis goslingi | Apalis goslingi |
| Gould's Frogmouth | Batrachostomus stellatus | Batrachostomus stellatus |
| Gould's Shortwing | Brachypteryx stellata | Brachypteryx stellata |
| Gould's Toucanet | Selenidera gouldii | Selenidera gouldii |
| Gouldian Finch | Chloebia gouldiae | Chloebia gouldiae |
| Grace's Warbler | Dendroica graciae | Dendroica graciae |
| Graceful Honeyeater | Meliphaga gracilis | Meliphaga gracilis |
| Grand Cayman Thrush | Turdus ravidus | Turdus ravidus |
| Grand Comoro Brush-Warbler | Nesillas brevicaudata | Nesillas brevicaudata |
| Grant's Bluebill | Spermophaga poliogenys | Spermophaga poliogenys |
| Grass-green Tanager | Chlorornis riefferii | Chlorornis riefferii |
| Grasshopper Sparrow | Ammodramus savannarum | Ammodramus savannarum |
| Grassland Sparrow | Myospiza humeralis | Ammodramus humeralis |
| Gray's Lark | Ammomanes grayi | Ammomanes grayi |
| Gray's Malimbe | Malimbus nitens | Malimbus nitens |
| Great Antpitta | Grallaria excelsa | Grallaria excelsa |
| Great Antshrike | Taraba major | Taraba major |
| Great Barbet | Megalaima virens | Megalaima virens |
| Great Black-headed Gull | Larus ichthyaetus | Larus ichthyaetus |
| Great Blue Heron | Ardea herodias | Ardea herodias |
| Great Blue Turaco | Corythaeola cristata | Corythaeola cristata |
| Great Bustard | Otis tarda | Otis tarda |
| Great Cormorant | Phalacrocorax carbo | Phalacrocorax carbo |
| Great Crested Flycatcher | Myiarchus crinitus | Myiarchus crinitus |
| Great Crested Grebe | Podiceps cristatus | Podiceps cristatus |
| Great Curassow | Crax rubra | Crax rubra |
| Great Dusky Swift | Aerornis senex | Cypseloides senex |
| Great Egret | Casmerodius albus | Casmerodius albus |
| Great Elaenia | Elaenia dayi | Elaenia dayi |
| Great Grebe | Podiceps major | Podiceps major |
| Great Grey Owl | Strix nebulosa | Strix nebulosa |
| Great Horned Owl | Bubo virginianus | Bubo virginianus |
| Great Iora | Aegithina lafresnayei | Aegithina lafresnayei |
| Great Jacamar | Jacamerops aurea | Jacamerops aureus |
| Great Kiskadee | Pitangus sulphuratus | Pitangus sulphuratus |
| Great Knot | Calidris tenuirostris | Calidris tenuirostris |
| Great Parrotbill | Conostoma oemodium | Conostoma oemodium |
| Great Potoo | Nyctibius grandis | Nyctibius grandis |
| Great Rufous Woodcreeper | Xiphocolaptes major | Xiphocolaptes major |
| Great Sapphirewing | Pterophanes cyanopterus | Pterophanes cyanopterus |
| Great Skua | Catharacta skua | Catharacta skua |
| Great Slaty Woodpecker | Mulleripicus pulverulentus | Mulleripicus pulverulentus |
| Great Snipe | Gallinago media | Gallinago media |
| Great Spinetail | Thripophaga hypochondriacus | Siptornopsis hypochondriacus |
| Great Spotted Cuckoo | Clamator glandarius | Clamator glandarius |
| Great Spotted Kiwi | Apteryx haastii | Apteryx haastii |
| Great Spotted Woodpecker | Picoides major | Dendrocopos major |
| Great Swallow-tailed Swift | Panyptila sanctihieronymi | Panyptila sanctihieronymi |
| Great Thrush | Turdus fuscater | Turdus fuscater |
| Great Tinamou | Tinamus major | Tinamus major |
| Great Tit | Parus major | Parus major |
| Great Xenops | Megaxenops parnaguae | Megaxenops parnaguae |
| Great-billed Hermit | Phaethornis malaris | Phaethornis malaris |
| Great-billed Parrot | Tanygnathus megalorhynchos | Tanygnathus megalorynchos |
| Great-tailed Grackle | Quiscalus mexicanus | Quiscalus mexicanus |
| Great-winged Petrel | Pterodroma macroptera | Pterodroma macroptera |
| Greater Ani | Crotophaga major | Crotophaga major |
| Greater Antillean Bullfinch | Loxigilla violacea | Loxigilla violacea |
| Greater Antillean Elaenia | Elaenia fallax | Elaenia fallax |
| Greater Antillean Nightjar | Caprimulgus cubanensis | Caprimulgus cubanensis |
| Greater Antillean Pewee | Contopus caribaeus | Contopus caribaeus |
| Greater Coucal | Centropus menbeki | Centropus sinensis |
| Greater Double-collared Sunbird | Nectarinia afra | Nectarinia afra |
| Greater Flamingo | Phoenicopterus ruber | Phoenicopterus ruber |
| Greater Green Leafbird | Chloropsis sonnerati | Chloropsis sonnerati |
| Greater Kestrel | Falco rupicoloides | Falco rupicoloides |
| Greater Melampitta | Melampitta gigantea | Melampitta gigantea |
| Greater Racket-tailed Drongo | Dicrurus paradiseus | Dicrurus paradiseus |
| Greater Rhea | Rhea americana | Rhea americana |
| Greater Scaup | Aythya marila | Aythya marila |
| Greater Scythebill | Campylorhamphus pucheranii | Campylorhamphus pucherani |
| Greater Short-toed Lark | Calandrella brachydactyla | Calandrella brachydactyla |
| Greater Spotted Eagle | Aquila clanga | Aquila clanga |
| Greater Thornbird | Phacellodomus ruber | Phacellodomus ruber |
| Greater Yellow-headed Vulture | Cathartes melambrotus | Cathartes melambrotus |
| Greater Yellowlegs | Tringa melanoleuca | Tringa melanoleuca |
| Green Aracari | Pteroglossus viridis | Pteroglossus viridis |
| Green Barbet | Cryptolibia olivacea | Stactolaema olivacea |
| Green Catbird | Ailuroedus crassirostris | Ailuroedus crassirostris |
| Green Cochoa | Cochoa viridis | Cochoa viridis |
| Green Crombec | Sylvietta virens | Sylvietta virens |
| Green Hermit | Phaethornis guy | Phaethornis guy |
| Green Honeycreeper | Chlorophanes spiza | Chlorophanes spiza |
| Green Hylia | Hylia prasina | Hylia prasina |
| Green Ibis | Mesembrinibis cayennensis | Mesembrinibis cayennensis |
| Green Iora | Aegithina viridissima | Aegithina viridissima |
| Green Jay | Cyanocorax yncas | Cyanocorax yncas |
| Green Kingfisher | Chloroceryle americana | Chloroceryle americana |
| Green Longtail | Urolais epichlora | Urolais epichlora |
| Green Magpie | Cissa chinensis | Cissa chinensis |
| Green Manakin | Chloropipo holochlora | Chloropipo holochlora |
| Green Mango | Anthracothorax viridis | Anthracothorax viridis |
| Green Oropendola | Psarocolius viridis | Psarocolius viridis |
| Green Peafowl | Pavo muticus | Pavo muticus |
| Green Rosella | Platycercus caledonicus | Platycercus caledonicus |
| Green Sandpiper | Tringa ochropus | Tringa ochropus |
| Green Sunbird | Anthreptes rectirostris | Anthreptes rectirostris |
| Green Thorntail | Popelairia conversii | Popelairia conversii |
| Green-backed Becard | Pachyramphus viridis | Pachyramphus viridis |
| Green-backed Bulbul | Hypsipetes malaccensis | Criniger chloronotus |
| Green-backed Camaroptera | Camaroptera brachyura | Camaroptera brachyura |
| Green-backed Eremomela | Eremomela canescens | Eremomela canescens |
| Green-backed Firecrown | Sephanoides sephaniodes | Sephanoides sephaniodes |
| Green-backed Sparrow | Arremonops chloronotus | Arremonops chloronotus |
| Green-backed Tit | Parus monticolus | Parus monticolus |
| Green-backed Whistler | Pachycephala albiventris | Pachycephala albiventris |
| Green-backed Woodpecker | Campethera cailliautii | Campethera cailliautii |
| Green-barred Woodpecker | Colaptes melanochloros | Colaptes melanochloros |
| Green-bellied Hummingbird | Amazilia virdigaster | Amazilia viridigaster |
| Green-breasted Mango | Anthracothorax prevostii | Anthracothorax prevostii |
| Green-breasted Pitta | Pitta reichenowi | Pitta reichenowi |
| Green-capped Tanager | Tangara meyerdeschauenseei | Tangara meyerdeschauenseei |
| Green-crowned Brilliant | Heliodoxa jacula | Heliodoxa jacula |
| Green-crowned Woodnymph | Thalurania fannyi | Thalurania fannyi |
| Green-eared Barbet | Megalaima faiostricta | Megalaima faiostricta |
| Green-fronted Hummingbird | Amazilia viridifrons | Amazilia viridifrons |
| Green-fronted Lancebill | Doryfera ludoviciae | Doryfera ludovicae |
| Green-headed Oriole | Oriolus chlorocephalus | Oriolus chlorocephalus |
| Green-headed Sunbird | Nectarinia verticalis | Nectarinia verticalis |
| Green-headed Tanager | Tangara seledon | Tangara seledon |
| Green-naped Tanager | Tangara fucosa | Tangara fucosa |
| Green-rumped Parrotlet | Forpus passerinus | Forpus passerinus |
| Green-tailed Emerald | Chlorostilbon alice | Chlorostilbon alice |
| Green-tailed Goldenthroat | Polytmus theresiae | Polytmus theresiae |
| Green-tailed Jacamar | Galbula galbula | Galbula galbula |
| Green-tailed Sunbird | Aethopyga nipalensis | Aethopyga nipalensis |
| Green-tailed Towhee | Chlorurus chlorurus | Pipilo chlorurus |
| Green-tailed Trainbearer | Lesbia nuna | Lesbia nuna |
| Green-throated Carib | Sericotes holosericeus | Eulampis holosericeus |
| Green-throated Greenbul | Pycnonotus chlorigula | Andropadus chlorigula |
| Green-throated Mango | Anthracothorax viridigula | Anthracothorax viridigula |
| Green-throated Sunbird | Nectarinia rubescens | Nectarinia rubescens |
| Green-winged Pytilia | Pytilia melba | Pytilia melba |
| Green-winged Saltator | Saltator similis | Saltator similis |
| Greenish Elaenia | Myiopagis viridicata | Myiopagis viridicata |
| Greenish Puffleg | Haplophaedia aureliae | Haplophaedia aureliae |
| Greenish Tyrannulet | Phyllomyias virescens | Phyllomyias virescens |
| Greenish Warbler | Phylloscopus trochiloides | Phylloscopus trochiloides |
| Grenada Dove | Leptotila wellsi | Leptotila wellsi |
| Grenada Flycatcher | Myiarchus nugator | Myiarchus nugator |
| Grey Antbird | Cercomacra cinerascens | Cercomacra cinerascens |
| Grey Antwren | Myrmotherula menetriesii | Myrmotherula menetriesii |
| Grey Apalis | Apalis cinerea | Apalis cinerea |
| Grey Bushchat | Saxicola ferrea | Saxicola ferrea |
| Grey Cisticola | Cisticola rufilata | Cisticola rufilatus |
| Grey Crow | Corvus tristis | Corvus tristis |
| Grey Currawong | Strepera versicolor | Strepera versicolor |
| Grey Elaenia | Myiopagis caniceps | Myiopagis caniceps |
| Grey Falcon | Falco hypoleucos | Falco hypoleucos |
| Grey Gull | Larus modestus | Larus modestus |
| Grey Hawk | Asturina nitida | Asturina plagiata |
| Grey Heron | Ardea cinerea | Ardea cinerea |
| Grey Honeyeater | Conopophila whitei | Conopophila whitei |
| Grey Hypocolius | Hypocolius ampelinus | Hypocolius ampelinus |
| Grey Jay | Perisoreus canadensis | Perisoreus canadensis |
| Grey Kestrel | Falco ardosiaceus | Falco ardosiaceus |
| Grey Kingbird | Tyrannus dominicensis | Tyrannus dominicensis |
| Grey Longbill | Macrosphenus concolor | Macrosphenus concolor |
| Grey Monjita | Xolmis cinerea | Xolmis cinerea |
| Grey Parrot | Psittacus erithacus | Psittacus erithacus |
| Grey Partridge | Perdix perdix | Perdix perdix |
| Grey Plover | Pluvialis squatarola | Pluvialis squatarola |
| Grey Seedeater | Sporophila intermedia | Sporophila intermedia |
| Grey Sibia | Heterophasia gracilis | Heterophasia gracilis |
| Grey Teal | Anas gracilis | Anas gracilis |
| Grey Thrasher | Toxostoma cinereum | Toxostoma cinereum |
| Grey Tinamou | Tinamus tao | Tinamus tao |
| Grey Trembler | Cinclocerthia gutturalis | Cinclocerthia gutturalis |
| Grey Vireo | Vireo vicinior | Vireo vicinior |
| Grey Wagtail | Motacilla cinerea | Motacilla cinerea |
| Grey Woodpecker | Dendropicos goertae | Dendropicos goertae |
| Grey Wren | Thryothorus griseus | Thryothorus griseus |
| Grey-backed Camaroptera | Camaroptera brevicaudata | Camaroptera brevicaudata |
| Grey-backed Fiscal | Lanius excubitoroides | Lanius excubitoroides |
| Grey-backed Hawk | Leucopternis occidentalis | Leucopternis occidentalis |
| Grey-backed Sparrow-Lark | Eremopterix verticalis | Eremopterix verticalis |
| Grey-backed Tachuri | Polystictus superciliaris | Polystictus superciliaris |
| Grey-barred Wren | Campylorhynchus megalopterus | Campylorhynchus megalopterus |
| Grey-bellied Antbird | Myrmeciza pelzelni | Myrmeciza pelzelni |
| Grey-bellied Bulbul | Pycnonotus cyaniventris | Pycnonotus cyaniventris |
| Grey-bellied Goshawk | Accipiter poliogaster | Accipiter poliogaster |
| Grey-bellied Spinetail | Synallaxis cinerascens | Synallaxis cinerascens |
| Grey-breasted Babbler | Malacopteron albogulare | Malacopteron albogulare |
| Grey-breasted Crake | Laterallus exilis | Laterallus exilis |
| Grey-breasted Flycatcher | Empidonax griseipectus | Lathrotriccus griseipectus |
| Grey-breasted Martin | Progne chalybea | Progne chalybea |
| Grey-breasted Sabrewing | Campylopterus largipennis | Campylopterus largipennis |
| Grey-breasted Spiderhunter | Arachnothera affinis | Arachnothera affinis |
| Grey-breasted Woodpecker | Melanerpes hypopolius | Melanerpes hypopolius |
| Grey-brown White-eye | Zosterops cinerea | Zosterops cinereus |
| Grey-capped Cuckoo | Coccyzus lansbergi | Coccyzus lansbergi |
| Grey-capped Flycatcher | Myiozetetes granadensis | Myiozetetes granadensis |
| Grey-capped Hemispingus | Hemispingus reyi | Hemispingus reyi |
| Grey-capped Tyrannulet | Phyllomyias griseocapilla | Phyllomyias griseocapilla |
| Grey-capped Warbler | Hypergerus lepida | Eminia lepida |
| Grey-capped Woodpecker | Picoides canicapillus | Dendrocopos canicapillus |
| Grey-cheeked Fulvetta | Alcippe morrisonia | Alcippe morrisonia |
| Grey-cheeked Nunlet | Nonnula ruficapilla | Nonnula frontalis |
| Grey-cheeked Parakeet | Brotogeris pyrrhopterus | Brotogeris pyrrhopterus |
| Grey-cheeked Thrush | Catharus minimus | Catharus minimus |
| Grey-chested Greenlet | Hylophilus semicinereus | Hylophilus semicinereus |
| Grey-chinned Hermit | Phaethornis griseogularis | Phaethornis griseogularis |
| Grey-collared Becard | Pachyramphus major | Pachyramphus major |
| Grey-collared Oriole | Oriolus forsteni | Oriolus forsteni |
| Grey-crested Finch | Lophospingus griseocristatus | Lophospingus griseocristatus |
| Grey-crowned Babbler | Pomatostomus temporalis | Pomatostomus temporalis |
| Grey-crowned Flycatcher | Tolmomyias poliocephalus | Tolmomyias poliocephalus |
| Grey-crowned Greenbul | Phyllastrephus cinereiceps | Phyllastrephus cinereiceps |
| Grey-crowned Woodpecker | Piculus auricularis | Piculus auricularis |
| Grey-crowned Yellowthroat | Geothlypis poliocephala | Geothlypis poliocephala |
| Grey-eyed Bulbul | Hypsipetes propinquus | Iole propinqua |
| Grey-eyed Greenlet | Hylophilus amaurocephalus | Hylophilus amaurocephalus |
| Grey-faced Tit-Babbler | Macronous kelleyi | Macronous kelleyi |
| Grey-faced Woodpecker | Picus canus | Picus canus |
| Grey-flanked Cinclodes | Cinclodes oustaleti | Cinclodes oustaleti |
| Grey-fronted Dove | Leptotila rufaxilla | Leptotila rufaxilla |
| Grey-fronted Honeyeater | Pycnopygius cinereus | Lichenostomus plumulus |
| Grey-headed Albatross | Diomedea chrysostoma | Diomedea chrysostoma |
| Grey-headed Antbird | Myrmeciza griseiceps | Myrmeciza griseiceps |
| Grey-headed Broadbill | Smithornis sharpei | Smithornis sharpei |
| Grey-headed Bulbul | Pycnonotus priocephalus | Pycnonotus priocephalus |
| Grey-headed Chachalaca | Ortalis cinereiceps | Ortalis cinereiceps |
| Grey-headed Dove | Leptotila plumbeiceps | Leptotila plumbeiceps |
| Grey-headed Greenbul | Phyllastrephus poliocephalus | Phyllastrephus poliocephalus |
| Grey-headed Gull | Larus cirrocephalus | Larus cirrocephalus |
| Grey-headed Honeyeater | Meliphaga keartlandi | Lichenostomus keartlandi |
| Grey-headed Kingfisher | Halcyon leucocephala | Halcyon leucocephala |
| Grey-headed Kite | Leptodon cayanensis | Leptodon cayanensis |
| Grey-headed Lapwing | Vanellus cinereus | Vanellus cinereus |
| Grey-headed Lovebird | Agapornis cana | Agapornis canus |
| Grey-headed Parrotbill | Paradoxornis gularis | Paradoxornis gularis |
| Grey-headed Silverbill | Lonchura griseicapilla | Lonchura griseicapilla |
| Grey-headed Sparrow | Passer griseus | Passer griseus |
| Grey-headed Spinetail | Certhiaxis semicinerea | Cranioleuca semicinerea |
| Grey-headed Tanager | Eucometis penicillata | Eucometis penicillata |
| Grey-headed Warbler | Basileuterus griseiceps | Basileuterus griseiceps |
| Grey-headed Woodpecker | Dendropicos spodocephalus | Dendropicos spodocephalus |
| Grey-hooded Attila | Attila rufus | Attila rufus |
| Grey-hooded Flycatcher | Mionectes rufiventris | Mionectes rufiventris |
| Grey-hooded White-eye | Lophozosterops pinaiae | Lophozosterops pinaiae |
| Grey-legged Tinamou | Crypturellus duidae | Crypturellus duidae |
| Grey-mantled Wren | Odontorchilus branickii | Odontorchilus branickii |
| Grey-naped Antpitta | Grallaria griseonucha | Grallaria griseonucha |
| Grey-necked Bunting | Emberiza buchanani | Emberiza buchanani |
| Grey-necked Friarbird | Philemon subcorniculatus | Philemon subcorniculatus |
| Grey-rumped Swallow | Pseudhirundo griseopyga | Hirundo griseopyga |
| Grey-rumped Swift | Chaetura cinereiventris | Chaetura cinereiventris |
| Grey-streaked Flycatcher | Muscicapa griseisticta | Muscicapa griseisticta |
| Grey-striped Francolin | Francolinus griseostriatus | Francolinus griseostriatus |
| Grey-tailed Piha | Lipaugus subalaris | Lipaugus subalaris |
| Grey-tailed Tattler | Heteroscelus brevipes | Tringa brevipes |
| Grey-throated Barbet | Gymnobucco bonapartei | Gymnobucco bonapartei |
| Grey-throated Chat | Granatellus sallaei | Granatellus sallaei |
| Grey-throated Greenbul | Pycnonotus tephrolaemus | Andropadus tephrolaemus |
| Grey-throated Rail | Canirallus oculeus | Canirallus oculeus |
| Grey-throated Warbler | Basileuterus cinereicollis | Basileuterus cinereicollis |
| Grey-throated White-eye | Zosterops ugiensis | Zosterops rendovae |
| Grey-winged Blackbird | Turdus boulboul | Turdus boulboul |
| Grey-winged Cotinga | Tijuca condita | Tijuca condita |
| Greyish Miner | Geositta maritima | Geositta maritima |
| Greyish Mourner | Rhytipterna simplex | Rhytipterna simplex |
| Greyish Piculet | Picumnus granadensis | Picumnus granadensis |
| Greyish Saltator | Saltator coerulescens | Saltator coerulescens |
| Greylag Goose | Anser anser | Anser anser |
| Grimwood's Longclaw | Macronyx grimwoodi | Macronyx grimwoodi |
| Groove-billed Ani | Crotophaga sulcirostris | Crotophaga sulcirostris |
| Groove-billed Toucanet | Aulacorhynchus sulcatus | Aulacorhynchus sulcatus |
| Grosbeak Weaver | Amblyospiza albifrons | Amblyospiza albifrons |
| Ground Parrot | Pezoporus wallicus | Pezoporus wallicus |
| Ground Woodpecker | Geocolaptes olivaceus | Geocolaptes olivaceus |
| Groundscraper Thrush | Psophocichla litsipsirupa | Psophocichla litsipsirupa |
| Guadalcanal Honeyeater | Meliphaga inexpectata | Guadalcanaria inexpectata |
| Guadeloupe Woodpecker | Melanerpes herminieri | Melanerpes herminieri |
| Guaiabero | Bolbopsittacus lunulatus | Bolbopsittacus lunulatus |
| Guam Rail | Rallus owstoni | Gallirallus owstoni |
| Guanay Cormorant | Phalacrocorax bougainvillei | Phalacrocorax bougainvillii |
| Guayaquil Woodpecker | Campephilus gayaquilensis | Campephilus gayaquilensis |
| Guianan Gnatcatcher | Polioptila guianensis | Polioptila guianensis |
| Guianan Piculet | Picumnus minutissimus | Picumnus minutissimus |
| Guianan Toucanet | Selenidera culik | Selenidera culik |
| Guira Cuckoo | Guira guira | Guira guira |
| Guira Tanager | Hemithraupis guira | Hemithraupis guira |
| Gull-billed Tern | Gelochelidon nilotica | Sterna nilotica |
| Gundlach's Hawk | Accipiter gundlachii | Accipiter gundlachi |
| Gurney's Eagle | Aquila gurneyi | Aquila gurneyi |
| Gurney's Pitta | Pitta gurneyi | Pitta gurneyi |
| Gurney's Sugarbird | Promerops gurneyi | Promerops gurneyi |
| Guttulated Foliage-gleaner | Philydor guttulatus | Syndactyla guttulata |
| Hadada Ibis | Hagedashia hagedash | Bostrychia hagedash |
| Hair-crested Drongo | Dicrurus hottentottus | Dicrurus hottentottus |
| Hairy Woodpecker | Picoides villosus | Picoides villosus |
| Hairy-backed Bulbul | Hypsipetes criniger | Tricholestes criniger |
| Hairy-breasted Barbet | Tricholaema hirsuta | Tricholaema hirsuta |
| Half-collared Kingfisher | Alcedo semitorquata | Alcedo semitorquata |
| Hall's Greenbul | Pycnonotus hallae | Andropadus hallae |
| Hammond's Flycatcher | Empidonax hammondii | Empidonax hammondii |
| Handsome Flycatcher | Myiophobus pulcher | Myiophobus pulcher |
| Handsome Francolin | Francolinus nobilis | Francolinus nobilis |
| Handsome Fruiteater | Pipreola formosa | Pipreola formosa |
| Happy Wren | Thryothorus felix | Thryothorus felix |
| Harlequin Duck | Histrionicus histrionicus | Histrionicus histrionicus |
| Harlequin Quail | Coturnix delegorguei | Coturnix delegorguei |
| Harpy Eagle | Harpia harpyja | Harpia harpyja |
| Hartert's Camaroptera | Camaroptera harterti | Camaroptera harterti |
| Hartlaub's Bustard | Eupodotis hartlaubii | Eupodotis hartlaubii |
| Hartlaub's Duck | Pteronetta hartlaubii | Pteronetta hartlaubii |
| Hartlaub's Francolin | Francolinus hartlaubi | Francolinus hartlaubi |
| Hartlaub's Turaco | Tauraco hartlaubi | Tauraco hartlaubi |
| Harwood's Francolin | Francolinus harwoodi | Francolinus harwoodi |
| Hauxwell's Thrush | Turdus hauxwelli | Turdus hauxwelli |
| Hawaii Creeper | Oreomystis mana | Oreomystis mana |
| Hawaiian Coot | Fulica alai | Fulica alai |
| Hawaiian Crow | Corvus hawaiiensis | Corvus hawaiiensis |
| Hawaiian Hawk | Buteo solitarius | Buteo solitarius |
| Hawaiian Petrel | Pterodroma sandwichensis | Pterodroma sandwichensis |
| Hawfinch | Coccothraustes coccothraustes | Coccothraustes coccothraustes |
| Hazel Grouse | Bonasa bonasia | Bonasa bonasia |
| Heart-spotted Woodpecker | Hemicircus canente | Hemicircus canente |
| Heermann's Gull | Larus heermanni | Larus heermanni |
| Heinroth's Shearwater | Puffinus heinrothi | Puffinus heinrothi |
| Hellmayr's Pipit | Anthus hellmayri | Anthus hellmayri |
| Helmeted Curassow | Crax pauxi | Pauxi pauxi |
| Helmeted Guineafowl | Numida meleagris | Numida meleagris |
| Helmeted Hornbill | Rhinoplax vigil | Buceros vigil |
| Helmeted Manakin | Antilophia galeata | Antilophia galeata |
| Helmeted Woodpecker | Dryocopus galeatus | Dryocopus galeatus |
| Hemprich's Hornbill | Tockus hemprichii | Tockus hemprichii |
| Henderson Island Crake | Porzana atra | Porzana atra |
| Henna-hooded Foliage-gleaner | Automolus erythrocephalus | Hylocryptus erythrocephalus |
| Henslow's Sparrow | Ammodramus henslowii | Ammodramus henslowii |
| Henst's Goshawk | Accipiter henstii | Accipiter henstii |
| Hepatic Tanager | Piranga flava | Piranga flava |
| Herero Chat | Namibornis herero | Namibornis herero |
| Hermit Thrush | Catharus guttatus | Catharus guttatus |
| Hermit Warbler | Dendroica occidentalis | Dendroica occidentalis |
| Herring Gull | Larus argentatus | Larus argentatus |
| Heuglin's Bustard | Neotis heuglinii | Neotis heuglinii |
| Highland Elaenia | Elaenia obscura | Elaenia obscura |
| Highland Guan | Penelopina nigra | Penelopina nigra |
| Highland Tinamou | Nothocercus bonapartei | Nothocercus bonapartei |
| Hildebrandt's Francolin | Francolinus hildebrandti | Francolinus hildebrandti |
| Hildebrandt's Starling | Spreo hildebrandti | Lamprotornis hildebrandti |
| Hill Prinia | Prinia criniger | Prinia atrogularis |
| Himalayan Griffon | Gyps himalayensis | Gyps himalayensis |
| Himalayan Snowcock | Tetraogallus himalayensis | Tetraogallus himalayensis |
| Himalayan Swiftlet | Aerodramus brevirostris | Collocalia brevirostris |
| Himalayan Woodpecker | Picoides himalayensis | Dendrocopos himalayensis |
| Hispaniolan Emerald | Chlorostilbon swainsonii | Chlorostilbon swainsonii |
| Hispaniolan Trogon | Temnotrogon roseigaster | Priotelus roseigaster |
| Hispaniolan Woodpecker | Melanerpes striatus | Melanerpes striatus |
| Hoary Puffleg | Haplophaedia lugens | Haplophaedia lugens |
| Hoary-headed Grebe | Podiceps poliocephalus | Poliocephalus poliocephalus |
| Hoary-throated Spinetail | Synallaxis kollari | Synallaxis kollari |
| Hoatzin | Opisthocomus hoazin | Opisthocomus hoazin |
| Hodgson's Frogmouth | Batrachostomus hodgsoni | Batrachostomus hodgsoni |
| Hodgson's Redstart | Phoenicurus hodgsoni | Phoenicurus hodgsoni |
| Hoffmann's Woodpecker | Melanerpes hoffmannii | Melanerpes hoffmannii |
| Honeyguide Greenbul | Baeopogon indicator | Baeopogon indicator |
| Hooded Antpitta | Grallaricula cucullata | Grallaricula cucullata |
| Hooded Berryeater | Carpornis cucullatus | Carpornis cucullatus |
| Hooded Crane | Grus monacha | Grus monacha |
| Hooded Gnateater | Conopophaga roberti | Conopophaga roberti |
| Hooded Grebe | Podiceps gallardoi | Podiceps gallardoi |
| Hooded Grosbeak | Coccothraustes abeillei | Hesperiphona abeillei |
| Hooded Merganser | Mergus cucullatus | Lophodytes cucullatus |
| Hooded Oriole | Icterus cucullatus | Icterus cucullatus |
| Hooded Pitta | Pitta sordida | Pitta sordida |
| Hooded Plover | Charadrius rubricollis | Charadrius rubricollis |
| Hooded Robin | Petroica cucullata | Melanodryas cucullata |
| Hooded Seedeater | Sporophila melanops | Sporophila melanops |
| Hooded Siskin | Carduelis magellanica | Carduelis magellanica |
| Hooded Tanager | Nemosia pileata | Nemosia pileata |
| Hooded Tinamou | Nothocercus nigrocapillus | Nothocercus nigrocapillus |
| Hooded Vulture | Necrosyrtes monachus | Necrosyrtes monachus |
| Hooded Warbler | Wilsonia citrina | Wilsonia citrina |
| Hooded Wheatear | Oenanthe monacha | Oenanthe monacha |
| Hooded Yellowthroat | Geothlypis nelsoni | Geothlypis nelsoni |
| Hook-billed Hermit | Glaucis dohrnii | Ramphodon dohrnii |
| Hook-billed Kingfisher | Melidora macrorrhina | Melidora macrorrhina |
| Hook-billed Kite | Chondrohierax uncinatus | Chondrohierax uncinatus |
| Hook-billed Vanga | Vanga curvirostris | Vanga curvirostris |
| Horned Coot | Fulica cornuta | Fulica cornuta |
| Horned Curassow | Crax unicornis | Pauxi unicornis |
| Horned Guan | Oreophasis derbianus | Oreophasis derbianus |
| Horned Lark | Eremophila alpestris | Eremophila alpestris |
| Horned Parakeet | Cyanoramphus cornutus | Eunymphicus cornutus |
| Horned Puffin | Fratercula corniculata | Fratercula corniculata |
| Horned Screamer | Anhima cornuta | Anhima cornuta |
| Horned Sungem | Heliactin cornuta | Heliactin cornuta |
| Horus Swift | Apus horus | Apus horus |
| Hottentot Teal | Anas punctata | Anas hottentota |
| Houbara Bustard | Chlamydotis undulata | Chlamydotis undulata |
| House Bunting | Emberiza striolata | Emberiza striolata |
| House Crow | Corvus splendens | Corvus splendens |
| House Finch | Carpodacus mexicanus | Carpodacus mexicanus |
| House Sparrow | Passer domesticus | Passer domesticus |
| House Swift | Apus nipalensis | Apus nipalensis |
| House Wren | Troglodytes aedon | Troglodytes aedon |
| Hudson's Canastero | Thripophaga hudsoni | Asthenes hudsoni |
| Hudsonian Godwit | Limosa haemastica | Limosa haemastica |
| Humblot's Flycatcher | Humblotia flavirostris | Humblotia flavirostris |
| Humblot's Sunbird | Nectarinia humbloti | Nectarinia humbloti |
| Humboldt Penguin | Spheniscus humboldti | Spheniscus humboldti |
| Hume's Owl | Strix butleri | Strix butleri |
| Hume's Wheatear | Oenanthe alboniger | Oenanthe alboniger |
| Hunter's Cisticola | Cisticola hunteri | Cisticola hunteri |
| Hunter's Sunbird | Nectarinia hunteri | Nectarinia hunteri |
| Hutton's Shearwater | Puffinus huttoni | Puffinus huttoni |
| Hutton's Vireo | Vireo huttoni | Vireo huttoni |
| Hyacinth Macaw | Anodorhynchus hyacinthinus | Anodorhynchus hyacinthinus |
| Ibadan Malimbe | Malimbus ibadanensis | Malimbus ibadanensis |
| Iceland Gull | Larus glaucoides | Larus glaucoides |
| Icterine Greenbul | Phyllastrephus icterinus | Phyllastrephus icterinus |
| Icterine Warbler | Hippolais icterina | Hippolais icterina |
| Ihering's Antwren | Myrmotherula iheringi | Myrmotherula iheringi |
| Iiwi | Vestiaria coccinea | Vestiaria coccinea |
| Immaculate Antbird | Myrmeciza immaculata | Myrmeciza immaculata |
| Imperial Eagle | Aquila heliaca | Aquila heliaca |
| Imperial Pheasant | Lophura imperialis | Lophura imperialis |
| Imperial Shag | Phalacrocorax atriceps | Phalacrocorax atriceps |
| Imperial Snipe | Gallinago imperialis | Gallinago imperialis |
| Imperial Woodpecker | Campephilus imperialis | Campephilus imperialis |
| Inaccessible Island Rail | Atlantisia rogersi | Atlantisia rogersi |
| Inca Dove | Scardafella inca | Columbina inca |
| Inca Tern | Larosterna inca | Larosterna inca |
| Inca Wren | Thryothorus eisenmanni | Thryothorus eisenmanni |
| Indian Cormorant | Phalacrocorax fuscicollis | Phalacrocorax fuscicollis |
| Indian Courser | Cursorius coromandelicus | Cursorius coromandelicus |
| Indian Nightjar | Caprimulgus asiaticus | Caprimulgus asiaticus |
| Indian Roller | Coracias benghalensis | Coracias benghalensis |
| Indian Skimmer | Rynchops albicollis | Rynchops albicollis |
| Indigo Bunting | Passerina cyanea | Passerina cyanea |
| Indigo Flycatcher | Muscicapa indigo | Eumyias indigo |
| Indigo Grosbeak | Cyanoloxia glaucocaerulea | Cyanoloxia glaucocaerulea |
| Indigo Macaw | Anodorhynchus leari | Anodorhynchus leari |
| Indigo-capped Hummingbird | Amazilia cyanifrons | Amazilia cyanifrons |
| Indigo-winged Parrot | Hapalopsittaca fuertesi | Hapalopsittaca fuertesi |
| Intermediate Egret | Mesophoyx intermedia | Mesophoyx intermedia |
| Iraq Babbler | Turdoides altirostris | Turdoides altirostris |
| Iris Lorikeet | Trichoglossus iris | Psitteuteles iris |
| Isabelline Wheatear | Oenanthe isabellina | Oenanthe isabellina |
| Island Canary | Serinus canaria | Serinus canaria |
| Island Thrush | Turdus poliocephalus | Turdus poliocephalus |
| Island Whistler | Pachycephala phaionota | Pachycephala phaionotus |
| Itatiaia Thistletail | Schizoeaca moreirae | Schizoeaca moreirae |
| Ivory Gull | Pagophila eburnea | Pagophila eburnea |
| Ivory-billed Aracari | Pteroglossus azara | Pteroglossus azara |
| Ivory-billed Woodcreeper | Xiphorhynchus flavigaster | Xiphorhynchus flavigaster |
| Ivory-billed Woodpecker | Campephilus principalis | Campephilus principalis |
| Jabiru | Ephippiorhynchus mycteria | Jabiru mycteria |
| Jack Snipe | Lymnocryptes minima | Lymnocryptes minimus |
| Jackal Buzzard | Buteo rufofuscus | Buteo rufofuscus |
| Jackass Penguin | Spheniscus demersus | Spheniscus demersus |
| Jackson's Francolin | Francolinus jacksoni | Francolinus jacksoni |
| Jackson's Hornbill | Tockus jacksoni | Tockus jacksoni |
| Jackson's Pipit | Anthus latistriatus | Anthus latistriatus |
| Jamaican Becard | Pachyramphus niger | Pachyramphus niger |
| Jamaican Blackbird | Nesopsar nigerrimus | Nesopsar nigerrimus |
| Jamaican Crow | Corvus jamaicensis | Corvus jamaicensis |
| Jamaican Euphonia | Euphonia jamaica | Euphonia jamaica |
| Jamaican Mango | Anthracothorax mango | Anthracothorax mango |
| Jamaican Oriole | Icterus leucopteryx | Icterus leucopteryx |
| Jamaican Owl | Pseudoscops grammicus | Pseudoscops grammicus |
| Jamaican Tody | Todus todus | Todus todus |
| Jamaican Woodpecker | Melanerpes radiolatus | Melanerpes radiolatus |
| Jambandu Indigobird | Vidua raricola | Vidua raricola |
| Jameson's Wattle-eye | Platysteira jamesoni | Platysteira jamesoni |
| Japanese Cormorant | Phalacrocorax capillatus | Phalacrocorax capillatus |
| Japanese Quail | Coturnix japonica | Coturnix japonica |
| Japanese Robin | Erithacus akahige | Erithacus akahige |
| Japanese Waxwing | Bombycilla japonica | Bombycilla japonica |
| Japanese White-eye | Zosterops japonica | Zosterops japonicus |
| Java Sparrow | Padda oryzivora | Padda oryzivora |
| Javan Frogmouth | Batrachostomus javensis | Batrachostomus javensis |
| Javan Grey-throated White-eye | Lophozosterops javanicus | Lophozosterops javanicus |
| Javan White-eye | Zosterops flava | Zosterops flavus |
| Jerdon's Babbler | Moupinia altirostris | Chrysomma altirostre |
| Jerdon's Baza | Aviceda jerdoni | Aviceda jerdoni |
| Jerdon's Bushchat | Saxicola jerdoni | Saxicola jerdoni |
| Jerdon's Courser | Rhinoptilus bitorquatus | Rhinoptilus bitorquatus |
| Jet Antbird | Cercomacra nigricans | Cercomacra nigricans |
| Jet Manakin | Chloropipo unicolor | Chloropipo unicolor |
| Jobi Manucode | Manucodia jobiensis | Manucodia jobiensis |
| Jouanin's Petrel | Bulweria fallax | Bulweria fallax |
| Joyful Greenbul | Chlorocichla laetissima | Chlorocichla laetissima |
| Juan Fernandez Firecrown | Sephanoides fernandensis | Sephanoides fernandensis |
| Juan Fernandez Petrel | Pterodroma defilippiana | Pterodroma externa |
| Jungle Crow | Corvus levaillantii | Corvus levaillantii |
| Jungle Owlet | Glaucidium radiatum | Glaucidium radiatum |
| Jungle Prinia | Prinia sylvatica | Prinia sylvatica |
| Junin Canastero | Thripophaga virgata | Asthenes virgata |
| Kabylie Nuthatch | Sitta ledanti | Sitta ledanti |
| Kaffir Rail | Rallus caerulescens | Rallus caerulescens |
| Kagu | Rhynochetos jubatus | Rhynochetos jubatus |
| Kai Cicadabird | Coracina dispar | Coracina dispar |
| Kai Coucal | Centropus spilopterus | Centropus spilopterus |
| Kakapo | Strigops habroptilus | Strigops habroptilus |
| Kalij Pheasant | Lophura leucomelana | Lophura leucomelanos |
| Kalinowski's Tinamou | Nothoprocta kalinowskii | Nothoprocta kalinowskii |
| Karamoja Apalis | Apalis karamojae | Apalis karamojae |
| Karoo Chat | Cercomela schlegelii | Cercomela schlegelii |
| Karoo Lark | Certhilauda albescens | Certhilauda albescens |
| Karoo Prinia | Prinia maculosa | Prinia maculosa |
| Kashmir Flycatcher | Ficedula subrubra | Ficedula subrubra |
| Kauai Creeper | Oreomystis bairdi | Oreomystis bairdi |
| Kea | Nestor notabilis | Nestor notabilis |
| Keel-billed Motmot | Electron carinatum | Electron carinatum |
| Keel-billed Toucan | Ramphastos sulfuratus | Ramphastos sulfuratus |
| Kelp Goose | Chloephaga hybrida | Chloephaga hybrida |
| Kemp's Longbill | Macrosphenus kempi | Macrosphenus kempi |
| Kenrick's Starling | Poeoptera kenricki | Poeoptera kenricki |
| Kentish Plover | Charadrius alexandrinus | Charadrius alexandrinus |
| Kentucky Warbler | Geothlypis formosa | Oporornis formosus |
| Kenya Violet-backed Sunbird | Anthreptes orientalis | Anthreptes orientalis |
| Kerguelen Petrel | Lugensa brevirostris | Pterodroma brevirostris |
| Kerguelen Tern | Sterna virgata | Sterna virgata |
| Kermadec Petrel | Pterodroma neglecta | Pterodroma neglecta |
| Kilombero Weaver | Ploceus burnieri | Ploceus burnieri |
| King Eider | Somateria spectabilis | Somateria spectabilis |
| King Gull | Larus hartlaubii | Larus hartlaubii |
| King Penguin | Aptenodytes patagonicus | Aptenodytes patagonicus |
| King Vulture | Sarcoramphus papa | Sarcoramphus papa |
| Kinglet Calyptura | Calyptura cristata | Calyptura cristata |
| Kirtland's Warbler | Dendroica kirtlandii | Dendroica kirtlandii |
| Kittlitz's Murrelet | Brachyramphus brevirostris | Brachyramphus brevirostris |
| Klages's Antwren | Myrmotherula klagesi | Myrmotherula klagesi |
| Knysna Woodpecker | Campethera notata | Campethera notata |
| Koepcke's Hermit | Phaethornis koepckeae | Phaethornis koepckeae |
| Kokako | Callaeas cinerea | Callaeas cinerea |
| Koklass Pheasant | Pucrasia macrolopha | Pucrasia macrolopha |
| Kopje Warbler | Euryptila subcinnamomea | Euryptila subcinnamomea |
| Kordofan Lark | Mirafra cordofanica | Mirafra cordofanica |
| Kori Bustard | Ardeotis kori | Ardeotis kori |
| Kretschmer's Longbill | Macrosphenus kretschmeri | Macrosphenus kretschmeri |
| Kulambangra Monarch | Monarcha browni | Monarcha browni |
| Kurrichane Thrush | Turdus libonyanus | Turdus libonyanus |
| La Sagra's Flycatcher | Myiarchus sagrae | Myiarchus sagrae |
| La Selle Thrush | Turdus swalesi | Turdus swalesi |
| Laced Woodpecker | Picus vittatus | Picus vittatus |
| Ladder-backed Woodpecker | Picoides scalaris | Picoides scalaris |
| Ladder-tailed Nightjar | Hydropsalis climacocerca | Hydropsalis climacocerca |
| Lady Amherst's Pheasant | Chrysolophus amherstiae | Chrysolophus amherstiae |
| Lafresnaye's Piculet | Picumnus lafresnayi | Picumnus lafresnayi |
| Lafresnaye's Vanga | Xenopirostris xenopirostris | Xenopirostris xenopirostris |
| Lammergeier | Gypaetus barbatus | Gypaetus barbatus |
| Lance-tailed Manakin | Chiroxiphia lanceolata | Chiroxiphia lanceolata |
| Lanceolated Monklet | Micromonacha lanceolata | Micromonacha lanceolata |
| Lanceolated Warbler | Locustella lanceolata | Locustella lanceolata |
| Lanner Falcon | Falco biarmicus | Falco biarmicus |
| Lappet-faced Vulture | Aegypius tracheliotus | Torgos tracheliotus |
| Large Elaenia | Elaenia spectabilis | Elaenia spectabilis |
| Large Flycatcher | Pomarea whitneyi | Bradornis microrhynchus |
| Large Frogmouth | Batrachostomus auritus | Batrachostomus auritus |
| Large Grey Babbler | Turdoides malcolmi | Turdoides malcolmi |
| Large Lifu White-eye | Zosterops inornata | Zosterops inornatus |
| Large Niltava | Niltava grandis | Niltava grandis |
| Large-billed Antwren | Herpsilochmus longirostris | Herpsilochmus longirostris |
| Large-billed Crow | Corvus macrorhynchos | Corvus macrorhynchos |
| Large-billed Lark | Calendula magnirostris | Galerida magnirostris |
| Large-billed Tern | Phaetusa simplex | Phaetusa simplex |
| Large-footed Tapaculo | Scytalopus macropus | Scytalopus macropus |
| Large-headed Flatbill | Ramphotrigon megacephala | Ramphotrigon megacephala |
| Large-tailed Antshrike | Mackenziaena leachii | Mackenziaena leachii |
| Lark Bunting | Calamospiza melanocorys | Calamospiza melanocorys |
| Lark Sparrow | Chondestes grammacus | Chondestes grammacus |
| Lark-like Brushrunner | Coryphistera alaudina | Coryphistera alaudina |
| Lattice-tailed Trogon | Trogon clathratus | Trogon clathratus |
| Laughing Dove | Streptopelia senegalensis | Streptopelia senegalensis |
| Laughing Falcon | Herpetotheres cachinnans | Herpetotheres cachinnans |
| Laughing Gull | Larus atricilla | Larus atricilla |
| Laughing Kookaburra | Dacelo novaeguineae | Dacelo novaeguineae |
| Laurel Pigeon | Columba junoniae | Columba junoniae |
| Lavender Waxbill | Estrilda caerulescens | Estrilda caerulescens |
| Lawrence's Goldfinch | Carduelis lawrencei | Carduelis lawrencei |
| Lawrence's Thrush | Turdus lawrencii | Turdus lawrencii |
| Layard's White-eye | Zosterops explorator | Zosterops explorator |
| Laysan Albatross | Diomedea immutabilis | Diomedea immutabilis |
| Laysan Finch | Telespyza cantans | Telespiza cantans |
| Lazuli Bunting | Passerina amoena | Passerina amoena |
| Lazuline Sabrewing | Campylopterus falcatus | Campylopterus falcatus |
| Lazy Cisticola | Cisticola aberrans | Cisticola aberrans |
| Le Conte's Sparrow | Ammodramus leconteii | Ammodramus leconteii |
| Leaden Antwren | Myrmotherula assimilis | Myrmotherula assimilis |
| Leaden Flycatcher | Myiagra rubecula | Myiagra rubecula |
| Leaden Honeyeater | Ptiloprora plumbea | Ptiloprora plumbea |
| Least Auklet | Aethia pusilla | Aethia pusilla |
| Least Bittern | Ixobrychus exilis | Ixobrychus exilis |
| Least Flycatcher | Empidonax minimus | Empidonax minimus |
| Least Grebe | Podiceps dominicus | Tachybaptus dominicus |
| Least Honeyguide | Indicator exilis | Indicator exilis |
| Least Nighthawk | Chordeiles pusillus | Chordeiles pusillus |
| Least Sandpiper | Calidris minutilla | Calidris minutilla |
| Least Tern | Sterna antillarum | Sterna antillarum |
| Lemon Dove | Aplopelia larvata | Columba larvata |
| Lemon-bellied Crombec | Sylvietta denti | Sylvietta denti |
| Lemon-bellied White-eye | Zosterops chloris | Zosterops chloris |
| Lemon-breasted Seedeater | Serinus citrinipectus | Serinus citrinipectus |
| Lemon-browed Flycatcher | Conopias cinchoneti | Conopias cinchoneti |
| Lemon-chested Greenlet | Hylophilus thoracicus | Hylophilus thoracicus |
| Lemon-throated Barbet | Eubucco richardsoni | Eubucco richardsoni |
| Lemon-throated White-eye | Zosterops anomala | Zosterops anomalus |
| Lesser Antillean Bullfinch | Loxigilla noctis | Loxigilla noctis |
| Lesser Antillean Pewee | Contopus latirostris | Contopus latirostris |
| Lesser Antillean Swift | Chaetura martinica | Chaetura martinica |
| Lesser Antillean Tanager | Tangara cucullata | Tangara cucullata |
| Lesser Black-backed Gull | Larus fuscus | Larus fuscus |
| Lesser Canastero | Thripophaga pyrrholeuca | Asthenes pyrrholeuca |
| Lesser Coucal | Centropus bengalensis | Centropus bengalensis |
| Lesser Elaenia | Elaenia chiriquensis | Elaenia chiriquensis |
| Lesser Flamingo | Phoeniconaias minor | Phoenicopterus minor |
| Lesser Florican | Sypheotides indica | Eupodotis indica |
| Lesser Green Leafbird | Chloropsis cyanopogon | Chloropsis cyanopogon |
| Lesser Grey Shrike | Lanius minor | Lanius minor |
| Lesser Honeyguide | Indicator minor | Indicator minor |
| Lesser Hornero | Furnarius minor | Furnarius minor |
| Lesser Kestrel | Falco naumanni | Falco naumanni |
| Lesser Kiskadee | Philohydor lictor | Philohydor lictor |
| Lesser Masked Weaver | Ploceus intermedius | Ploceus intermedius |
| Lesser Melampitta | Melampitta lugubris | Melampitta lugubris |
| Lesser Moorhen | Gallinula angulata | Gallinula angulata |
| Lesser Nighthawk | Chordeiles acutipennis | Chordeiles acutipennis |
| Lesser Noddy | Anous tenuirostris | Anous tenuirostris |
| Lesser Nothura | Nothura minor | Nothura minor |
| Lesser Racket-tailed Drongo | Dicrurus remifer | Dicrurus remifer |
| Lesser Rhea | Pterocnemia pennata | Rhea pennata |
| Lesser Scaup | Aythya affinis | Aythya affinis |
| Lesser Seedcracker | Pyrenestes minor | Pyrenestes minor |
| Lesser Short-toed Lark | Calandrella rufescens | Calandrella rufescens |
| Lesser Shortwing | Brachypteryx leucophrys | Brachypteryx leucophrys |
| Lesser Spotted Eagle | Aquila pomarina | Aquila pomarina |
| Lesser Spotted Woodpecker | Picoides minor | Dendrocopos minor |
| Lesser Swallow-tailed Swift | Panyptila cayennensis | Panyptila cayennensis |
| Lesser White-fronted Goose | Anser erythropus | Anser erythropus |
| Lesser Whitethroat | Sylvia curruca | Sylvia curruca |
| Lesser Woodcreeper | Lepidocolaptes fuscus | Lepidocolaptes fuscus |
| Lesser Yellow-headed Vulture | Cathartes burrovianus | Cathartes burrovianus |
| Lesser Yellowlegs | Tringa flavipes | Tringa flavipes |
| Letter-winged Kite | Elanus scriptus | Elanus scriptus |
| Lettered Aracari | Pteroglossus inscriptus | Pteroglossus inscriptus |
| Levaillant's Cuckoo | Oxylophus levaillantii | Oxylophus levaillantii |
| Levaillant's Woodpecker | Picus vaillantii | Picus vaillantii |
| Liberian Greenbul | Phyllastrephus leucolepis | Phyllastrephus leucolepis |
| Lichtenstein's Sandgrouse | Pterocles lichtensteinii | Pterocles lichtensteinii |
| Light-crowned Spinetail | Certhiaxis albiceps | Cranioleuca albiceps |
| Lilac-breasted Roller | Coracias caudata | Coracias caudata |
| Lilac-tailed Parrotlet | Touit batavica | Touit batavica |
| Lilian's Meadowlark | Sturnella lilianae | Sturnella lilianae |
| Limpkin | Aramus guarauna | Aramus guarauna |
| Line-cheeked Spinetail | Certhiaxis antisiensis | Cranioleuca antisiensis |
| Line-fronted Canastero | Thripophaga urubambensis | Asthenes urubambensis |
| Lineated Barbet | Megalaima lineata | Megalaima lineata |
| Lineated Foliage-gleaner | Philydor subalaris | Syndactyla subalaris |
| Lineated Woodcreeper | Lepidocolaptes albolineatus | Lepidocolaptes albolineatus |
| Lineated Woodpecker | Dryocopus lineatus | Dryocopus lineatus |
| Lined Antshrike | Thamnophilus palliatus | Thamnophilus palliatus |
| Lined Seedeater | Sporophila lineola | Sporophila lineola |
| Little Bittern | Ixobrychus minutus | Ixobrychus minutus |
| Little Black Cormorant | Phalacrocorax sulcirostris | Phalacrocorax sulcirostris |
| Little Blue Heron | Egretta caerulea | Egretta caerulea |
| Little Brown Bustard | Eupodotis humilis | Eupodotis humilis |
| Little Bunting | Emberiza pusilla | Emberiza pusilla |
| Little Bustard | Tetrax tetrax | Tetrax tetrax |
| Little Corella | Cacatua sanguinea | Cacatua sanguinea |
| Little Crake | Porzana parva | Porzana parva |
| Little Crow | Corvus bennetti | Corvus bennetti |
| Little Cuckoo | Piaya minuta | Piaya minuta |
| Little Curlew | Numenius minutus | Numenius minutus |
| Little Eagle | Hieraaetus morphnoides | Hieraaetus morphnoides |
| Little Egret | Egretta garzetta | Egretta garzetta |
| Little Forktail | Enicurus scouleri | Enicurus scouleri |
| Little Friarbird | Philemon citreogularis | Philemon citreogularis |
| Little Grebe | Tachybaptus ruficollis | Tachybaptus ruficollis |
| Little Green Sunbird | Nectarinia seimundi | Nectarinia seimundi |
| Little Green Woodpecker | Campethera maculosa | Campethera maculosa |
| Little Greenbul | Pycnonotus virens | Andropadus virens |
| Little Grey Flycatcher | Muscicapa epulata | Bradornis pumilus |
| Little Grey Woodpecker | Dendropicos elachus | Dendropicos elachus |
| Little Gull | Larus minutus | Larus minutus |
| Little Hermit | Phaethornis longuemareus | Phaethornis longuemareus |
| Little Lorikeet | Glossopsitta pusilla | Glossopsitta pusilla |
| Little Nightjar | Caprimulgus parvulus | Caprimulgus parvulus |
| Little Owl | Athene noctua | Athene noctua |
| Little Penguin | Eudyptula minor | Eudyptula minor |
| Little Pied Cormorant | Phalacrocorax melanoleucos | Phalacrocorax melanoleucos |
| Little Pied Flycatcher | Ficedula westermanni | Ficedula westermanni |
| Little Raven | Corvus mellori | Corvus mellori |
| Little Ringed Plover | Charadrius dubius | Charadrius dubius |
| Little Shearwater | Puffinus assimilis | Puffinus assimilis |
| Little Slaty Flycatcher | Ficedula basilanica | Ficedula basilanica |
| Little Spiderhunter | Arachnothera longirostra | Arachnothera longirostra |
| Little Spotted Kiwi | Apteryx owenii | Apteryx owenii |
| Little Stint | Calidris minuta | Calidris minuta |
| Little Swift | Apus affinis | Apus affinis |
| Little Tern | Sterna albifrons | Sterna albifrons |
| Little Thornbird | Phacellodomus sibilatrix | Phacellodomus sibilatrix |
| Little Tinamou | Crypturellus soui | Crypturellus soui |
| Little Woodpecker | Veniliornis passerinus | Veniliornis passerinus |
| Little Woodstar | Acestrura bombus | Acestrura bombus |
| Livingstone's Flycatcher | Erythrocercus livingstonei | Erythrocercus livingstonei |
| Lizard Buzzard | Kaupifalco monogrammicus | Kaupifalco monogrammicus |
| Loanda Swift | Apus toulsoni | Apus toulsoni |
| Loetoe Monarch | Monarcha castus | Monarcha castus |
| Loggerhead Kingbird | Tyrannus caudifasciatus | Tyrannus caudifasciatus |
| Loggerhead Shrike | Lanius ludovicianus | Lanius ludovicianus |
| Lompobattang Flycatcher | Ficedula bonthaina | Ficedula bonthaina |
| Long-billed Corella | Cacatua tenuirostris | Cacatua tenuirostris |
| Long-billed Curlew | Numenius americanus | Numenius americanus |
| Long-billed Dowitcher | Limnodromus scolopaceus | Limnodromus scolopaceus |
| Long-billed Gnatwren | Ramphocaenus melanurus | Ramphocaenus melanurus |
| Long-billed Honeyeater | Melilestes megarhynchus | Melilestes megarhynchus |
| Long-billed Lark | Certhilauda curvirostris | Certhilauda curvirostris |
| Long-billed Pipit | Anthus similis | Anthus similis |
| Long-billed Plover | Charadrius novaeseelandiae | Charadrius placidus |
| Long-billed Spiderhunter | Arachnothera robusta | Arachnothera robusta |
| Long-billed Starthroat | Heliomaster longirostris | Heliomaster longirostris |
| Long-billed Thrasher | Toxostoma longirostre | Toxostoma longirostre |
| Long-billed Woodcreeper | Nasica longirostris | Nasica longirostris |
| Long-billed Wren | Thryothorus longirostris | Thryothorus longirostris |
| Long-crested Eagle | Spizaetus occipitalis | Lophaetus occipitalis |
| Long-eared Owl | Asio otus | Asio otus |
| Long-legged Buzzard | Buteo rufinus | Buteo rufinus |
| Long-legged Pipit | Anthus pallidiventris | Anthus pallidiventris |
| Long-tailed Antbird | Drymophila caudata | Drymophila caudata |
| Long-tailed Broadbill | Psarisomus dalhousiae | Psarisomus dalhousiae |
| Long-tailed Cinclodes | Cinclodes pabsti | Cinclodes pabsti |
| Long-tailed Duck | Clangula hyemalis | Clangula hyemalis |
| Long-tailed Fantail | Rhipidura opistherythra | Rhipidura opistherythra |
| Long-tailed Finch | Poephila acuticauda | Poephila acuticauda |
| Long-tailed Fiscal | Lanius cabanisi | Lanius cabanisi |
| Long-tailed Hermit | Phaethornis superciliosus | Phaethornis superciliosus |
| Long-tailed Koel | Urodynamis taitensis | Eudynamys taitensis |
| Long-tailed Manakin | Chiroxiphia linearis | Chiroxiphia linearis |
| Long-tailed Meadowlark | Sturnella loyca | Sturnella loyca |
| Long-tailed Minivet | Pericrocotus ethologus | Pericrocotus ethologus |
| Long-tailed Mockingbird | Mimus longicaudatus | Mimus longicaudatus |
| Long-tailed Paradigalla | Paradigalla carunculata | Paradigalla carunculata |
| Long-tailed Parakeet | Psittacula longicauda | Psittacula longicauda |
| Long-tailed Potoo | Nyctibius aethereus | Nyctibius aethereus |
| Long-tailed Rosefinch | Uragus sibiricus | Uragus sibiricus |
| Long-tailed Sabrewing | Campylopterus excellens | Campylopterus excellens |
| Long-tailed Sibia | Heterophasia picaoides | Heterophasia picaoides |
| Long-tailed Starling | Aplonis magna | Aplonis magna |
| Long-tailed Sylph | Aglaiocercus kingi | Aglaiocercus kingi |
| Long-tailed Tit | Aegithalos caudatus | Aegithalos caudatus |
| Long-tailed Triller | Lalage leucopyga | Lalage leucopyga |
| Long-tailed Tyrant | Colonia colonus | Colonia colonus |
| Long-tailed Woodcreeper | Deconychura longicauda | Deconychura longicauda |
| Long-tailed Woodnymph | Thalurania watertonii | Thalurania watertonii |
| Long-toed Lapwing | Vanellus crassirostris | Vanellus crassirostris |
| Long-toed Stint | Calidris subminuta | Calidris subminuta |
| Long-trained Nightjar | Macropsalis creagra | Macropsalis creagra |
| Long-wattled Umbrellabird | Cephalopterus penduliger | Cephalopterus penduliger |
| Long-whiskered Owlet | Xenoglaux loweryi | Xenoglaux loweryi |
| Long-winged Antwren | Myrmotherula longipennis | Myrmotherula longipennis |
| Long-winged Harrier | Circus buffoni | Circus buffoni |
| Lorentz's Whistler | Pachycephala lorentzi | Pachycephala lorentzi |
| Louisiade Flowerpecker | Dicaeum nitidum | Dicaeum nitidum |
| Lovely Cotinga | Cotinga amabilis | Cotinga amabilis |
| Loveridge's Sunbird | Nectarinia loveridgei | Nectarinia loveridgei |
| Lucifer Hummingbird | Calothorax lucifer | Calothorax lucifer |
| Lucy's Warbler | Vermivora luciae | Vermivora luciae |
| Ludlow's Fulvetta | Alcippe ludlowi | Alcippe ludlowi |
| Ludwig's Bustard | Neotis ludwigii | Neotis ludwigii |
| Lyre-tailed Honeyguide | Melichneutes robustus | Melichneutes robustus |
| Lyre-tailed Nightjar | Uropsalis lyra | Uropsalis lyra |
| MacConnell's Flycatcher | Mionectes macconnelli | Mionectes macconnelli |
| MacGillivray's Warbler | Geothlypis tolmei | Oporornis tolmiei |
| Macaroni Penguin | Eudyptes chrysolophus | Eudyptes chrysolophus |
| Maccoa Duck | Oxyura maccoa | Oxyura maccoa |
| Mackinnon's Shrike | Lanius mackinnoni | Lanius mackinnoni |
| Madagascar Bulbul | Hypsipetes madagascariensis | Hypsipetes madagascariensis |
| Madagascar Buzzard | Buteo brachypterus | Buteo brachypterus |
| Madagascar Cisticola | Cisticola cherina | Cisticola cherinus |
| Madagascar Cuckoo | Cuculus rochii | Cuculus rochii |
| Madagascar Jacana | Actophilornis albinucha | Actophilornis albinucha |
| Madagascar Kestrel | Falco newtoni | Falco newtoni |
| Madagascar Nightjar | Caprimulgus madagascariensis | Caprimulgus madagascariensis |
| Madagascar Partridge | Margaroperdix madagascarensis | Margaroperdix madagarensis |
| Madagascar Pochard | Aythya innotata | Aythya innotata |
| Madagascar Pratincole | Glareola ocularis | Glareola ocularis |
| Madagascar Rail | Rallus madagascariensis | Rallus madagascariensis |
| Madagascar Sandgrouse | Pterocles personatus | Pterocles personatus |
| Madagascar Snipe | Gallinago macrodactyla | Gallinago macrodactyla |
| Madagascar Starling | Saroglossa aurata | Saroglossa aurata |
| Madagascar Wagtail | Motacilla flaviventris | Motacilla flaviventris |
| Madeira Petrel | Pterodroma madeira | Pterodroma madeira |
| Magellanic Oystercatcher | Haematopus leucopodus | Haematopus leucopodus |
| Magellanic Penguin | Spheniscus magellanicus | Spheniscus magellanicus |
| Magellanic Plover | Pluvianellus socialis | Pluvianellus socialis |
| Magellanic Woodpecker | Campephilus magellanicus | Campephilus magellanicus |
| Magenta-throated Woodstar | Philodice bryantae | Philodice bryantae |
| Magnificent Riflebird | Ptiloris magnificus | Ptiloris magnificus |
| Magnolia Warbler | Dendroica magnolia | Dendroica magnolia |
| Magpie Goose | Anseranas semipalmata | Anseranas semipalmata |
| Magpie Shrike | Corvinella melanoleuca | Corvinella melanoleuca |
| Magpie Starling | Speculipastor bicolor | Speculipastor bicolor |
| Magpie Tanager | Cissopis leveriana | Cissopis leveriana |
| Maguari Stork | Ciconia maguari | Ciconia maguari |
| Malabar Parakeet | Psittacula columboides | Psittacula columboides |
| Malabar Trogon | Harpactes fasciatus | Harpactes fasciatus |
| Malachite Kingfisher | Alcedo cristata | Alcedo cristata |
| Malaita White-eye | Zosterops stresemanni | Zosterops stresemanni |
| Malia | Malia grata | Malia grata |
| Malindi Pipit | Anthus melindae | Anthus melindae |
| Mallard | Anas platyrhynchos | Anas platyrhynchos |
| Mandarin Duck | Aix galericulata | Aix galericulata |
| Maned Owl | Jubula lettii | Jubula lettii |
| Mangaia Kingfisher | Halcyon ruficollaris | Todirhamphus ruficollaris |
| Mangrove Cuckoo | Coccyzus minor | Coccyzus minor |
| Mangrove Fantail | Rhipidura phasiana | Rhipidura phasiana |
| Mangrove Finch | Camarhynchus heliobates | Camarhynchus heliobates |
| Mangrove Honeyeater | Meliphaga fasciogularis | Lichenostomus fasciogularis |
| Mangrove Hummingbird | Amazilia boucardi | Amazilia boucardi |
| Mangrove Kingfisher | Alcedo pusilla | Halcyon senegaloides |
| Mangrove Robin | Peneoenanthe pulverulenta | Eopsaltria pulverulenta |
| Mangrove Swallow | Tachycineta albilinea | Tachycineta albilinea |
| Mangrove Vireo | Vireo pallens | Vireo pallens |
| Mangrove Whistler | Pachycephala grisola | Pachycephala grisola |
| Mantled Hawk | Leucopternis polionota | Leucopternis polionota |
| Manu Antbird | Cercomacra manu | Cercomacra manu |
| Manx Shearwater | Puffinus puffinus | Puffinus puffinus |
| Many-banded Aracari | Pteroglossus pluricinctus | Pteroglossus pluricinctus |
| Many-spotted Hummingbird | Taphrospilus hypostictus | Taphrospilus hypostictus |
| Many-striped Canastero | Thripophaga flammulata | Asthenes flammulata |
| Marabou Stork | Leptoptilos crumeniferus | Leptoptilos crumeniferus |
| Marail Guan | Penelope marail | Penelope marail |
| Maranon Spinetail | Synallaxis maranonica | Synallaxis maranonica |
| Maranon Thrush | Turdus maranonicus | Turdus maranonicus |
| Marbled Frogmouth | Podargus ocellatus | Podargus ocellatus |
| Marbled Godwit | Limosa fedoa | Limosa fedoa |
| Marbled Murrelet | Brachyramphus marmoratus | Brachyramphus marmoratus |
| Marbled Teal | Marmaronetta angustirostris | Marmaronetta angustirostris |
| Marcapata Spinetail | Certhiaxis marcapatae | Cranioleuca marcapatae |
| Mariqua Flycatcher | Melaenornis mariquensis | Bradornis mariquensis |
| Mariqua Sunbird | Nectarinia mariquensis | Nectarinia mariquensis |
| Marmora's Warbler | Sylvia sarda | Sylvia sarda |
| Maroon Oriole | Oriolus traillii | Oriolus traillii |
| Maroon Woodpecker | Blythipicus rubiginosus | Blythipicus rubiginosus |
| Maroon-backed Accentor | Prunella immaculata | Prunella immaculata |
| Maroon-backed Whistler | Coracornis raveni | Coracornis raveni |
| Maroon-fronted Parrot | Rhynchopsitta terrisi | Rhynchopsitta terrisi |
| Marquesan Swiftlet | Aerodramus ocista | Collocalia ocista |
| Marsh Sandpiper | Tringa stagnatilis | Tringa stagnatilis |
| Marsh Seedeater | Sporophila palustris | Sporophila palustris |
| Marsh Tit | Parus palustris | Parus palustris |
| Marsh Warbler | Acrocephalus palustris | Acrocephalus palustris |
| Marsh Wren | Cistothorus palustris | Cistothorus palustris |
| Martial Eagle | Hieraaetus bellicosus | Polemaetus bellicosus |
| Martinique Oriole | Icterus bonana | Icterus bonana |
| Marvellous Spatuletail | Loddigesia mirabilis | Loddigesia mirabilis |
| Mascarene Martin | Phedina borbonica | Phedina borbonica |
| Masked Apalis | Apalis binotata | Apalis binotata |
| Masked Crimson Tanager | Ramphocelus nigrogularis | Ramphocelus nigrogularis |
| Masked Duck | Oxyura dominica | Oxyura dominica |
| Masked Finch | Poephila personata | Poephila personata |
| Masked Finfoot | Heliopais personata | Heliopais personata |
| Masked Gnatcatcher | Polioptila dumicola | Polioptila dumicola |
| Masked Lark | Spizocorys personata | Spizocorys personata |
| Masked Saltator | Saltator cinctus | Saltator cinctus |
| Masked Shrike | Lanius nubicus | Lanius nubicus |
| Masked Tanager | Tangara nigrocincta | Tangara nigrocincta |
| Masked Tityra | Tityra semifasciata | Tityra semifasciata |
| Masked Trogon | Trogon personatus | Trogon personatus |
| Masked Yellowthroat | Geothlypis aequinoctialis | Geothlypis aequinoctialis |
| Mato Grosso Antbird | Cercomacra melanaria | Cercomacra melanaria |
| Maui Creeper | Paroreomyza montana | Paroreomyza montana |
| Maui Parrotbill | Pseudonestor xanthophrys | Pseudonestor xanthophrys |
| Mauritius Fody | Foudia rubra | Foudia rubra |
| Mauritius Kestrel | Falco punctatus | Falco punctatus |
| Mauritius Olive White-eye | Zosterops chloronothos | Zosterops chloronothos |
| Mauritius Parakeet | Psittacula echo | Psittacula echo |
| Maxwell's Black Weaver | Ploceus albinucha | Ploceus albinucha |
| Mayotte Drongo | Dicrurus waldenii | Dicrurus waldenii |
| Mayotte Sunbird | Nectarinia coquerellii | Nectarinia coquerellii |
| McCown's Longspur | Calcarius mccownii | Calcarius mccownii |
| McKay's Bunting | Plectrophenax hyperboreus | Plectrophenax hyperboreus |
| Meadow Pipit | Anthus pratensis | Anthus pratensis |
| Mediterranean Gull | Larus melanocephalus | Larus melanocephalus |
| Mediterranean Shearwater | Puffinus yelkouan | Puffinus yelkouan |
| Meek's Lorikeet | Charmosyna meeki | Charmosyna meeki |
| Meller's Duck | Anas melleri | Anas melleri |
| Melodious Blackbird | Dives dives | Dives dives |
| Melodious Warbler | Hippolais polyglotta | Hippolais polyglotta |
| Menetries's Warbler | Sylvia mystacea | Sylvia mystacea |
| Merida Sunangel | Heliangelus spencei | Heliangelus spencei |
| Merlin | Falco columbarius | Falco columbarius |
| Metallic-green Tanager | Tangara labradorides | Tangara labradorides |
| Mew Gull | Larus canus | Larus canus |
| Mexican Chickadee | Parus sclateri | Parus sclateri |
| Mexican Jay | Aphelocoma ultramarina | Aphelocoma ultramarina |
| Mexican Parrotlet | Forpus cyanopygius | Forpus cyanopygius |
| Mexican Sheartail | Doricha eliza | Doricha eliza |
| Mexican Woodnymph | Thalurania ridgwayi | Thalurania ridgwayi |
| Meyer's Friarbird | Philemon meyeri | Philemon meyeri |
| Meyer's Goshawk | Accipiter meyerianus | Accipiter meyerianus |
| Micronesian Kingfisher | Halcyon cinnamomina | Todirhamphus cinnamominus |
| Micronesian Starling | Aplonis opaca | Aplonis opaca |
| Middle Spotted Woodpecker | Picoides medius | Dendrocopos medius |
| Mikado Pheasant | Syrmaticus mikado | Syrmaticus mikado |
| Military Macaw | Ara militaris | Ara militaris |
| Milky Stork | Mycteria cinerea | Mycteria cinerea |
| Minute Hermit | Phaethornis idaliae | Phaethornis idaliae |
| Miombo Double-collared Sunbird | Nectarinia manoensis | Nectarinia manoensis |
| Mississippi Kite | Ictinia mississippiensis | Ictinia mississippiensis |
| Mistle Thrush | Turdus viscivorus | Turdus viscivorus |
| Moheli Brush-Warbler | Nesillas mariae | Nesillas mariae |
| Molokai Creeper | Paroreomyza flammea | Paroreomyza flammea |
| Moluccan Starling | Aplonis mysolensis | Aplonis mysolensis |
| Moluccan Swiftlet | Aerodramus infuscatus | Collocalia infuscata |
| Mongalla Cisticola | Cisticola mongalla | Cisticola mongalla |
| Mongolian Lark | Melanocorypha mongolica | Melanocorypha mongolica |
| Monk Parakeet | Myiopsitta monachus | Myiopsitta monachus |
| Monotonous Lark | Mirafra passerina | Mirafra passerina |
| Montane Double-collared Sunbird | Nectarinia ludovicensis | Nectarinia ludovicensis |
| Montane Foliage-gleaner | Philydor striaticollis | Anabacerthia striaticollis |
| Monteiro's Hornbill | Tockus monteiri | Tockus monteiri |
| Montezuma Oropendola | Psarocolius montezuma | Gymnostinops montezuma |
| Montezuma Quail | Cyrtonyx montezumae | Cyrtonyx montezumae |
| Montserrat Oriole | Icterus oberi | Icterus oberi |
| Moorland Chat | Cercomela sordida | Cercomela sordida |
| Moreau's Sunbird | Nectarinia moreaui | Nectarinia moreaui |
| Moriche Oriole | Icterus chrysocephalus | Icterus chrysocephalus |
| Mosque Swallow | Hirundo senegalensis | Hirundo senegalensis |
| Moss-backed Tanager | Bangsia edwardsi | Bangsia edwardsi |
| Mottle-backed Elaenia | Elaenia gigas | Elaenia gigas |
| Mottle-cheeked Tyrannulet | Phylloscartes ventralis | Phylloscartes ventralis |
| Mottled Owl | Strix virgata | Strix virgata |
| Mottled Piculet | Picumnus nebulosus | Picumnus nebulosus |
| Mottled Swift | Tachymarptis aequatorialis | Tachymarptis aequatorialis |
| Mottled Whistler | Rhagologus leucostigma | Rhagologus leucostigma |
| Mountain Avocetbill | Opisthoprora euryptera | Opisthoprora euryptera |
| Mountain Bluebird | Sialia currucoides | Sialia currucoides |
| Mountain Cacique | Cacicus leucoramphus | Cacicus chrysonotus |
| Mountain Caracara | Phalcoboenus megalopterus | Phalcoboenus megalopterus |
| Mountain Chickadee | Parus gambeli | Parus gambeli |
| Mountain Elaenia | Elaenia frantzii | Elaenia frantzii |
| Mountain Fulvetta | Alcippe peracensis | Alcippe peracensis |
| Mountain Grackle | Macroagelaius subalaris | Macroagelaius subalaris |
| Mountain Greenbul | Pycnonotus nigriceps | Andropadus nigriceps |
| Mountain Owlet-Nightjar | Aegotheles albertisi | Aegotheles albertisi |
| Mountain Parakeet | Bolborhynchus aurifrons | Bolborhynchus aurifrons |
| Mountain Pipit | Anthus hoeschi | Anthus hoeschi |
| Mountain Plover | Charadrius montanus | Charadrius montanus |
| Mountain Quail | Oreortyx picta | Oreortyx pictus |
| Mountain Starling | Aplonis santovestris | Aplonis santovestris |
| Mountain Swiftlet | Aerodramus hirundinaceus | Collocalia hirundinacea |
| Mountain Thornbill | Acanthiza katherina | Acanthiza katherina |
| Mountain Velvetbreast | Lafresnaya lafresnayi | Lafresnaya lafresnayi |
| Mountain Wagtail | Motacilla clara | Motacilla clara |
| Mountain Wheatear | Oenanthe monticola | Oenanthe monticola |
| Mountain White-eye | Zosterops montanus | Zosterops montanus |
| Mountain Wren | Troglodytes solstitialis | Troglodytes solstitialis |
| Mourning Dove | Zenaida macroura | Zenaida macroura |
| Mourning Warbler | Geothlypis philadelphia | Oporornis philadelphia |
| Mourning Wheatear | Oenanthe lugens | Oenanthe lugens |
| Moussier's Redstart | Phoenicurus moussieri | Phoenicurus moussieri |
| Moustached Antpitta | Grallaria alleni | Grallaria alleni |
| Moustached Kingfisher | Actenoides bougainvillei | Actenoides bougainvillei |
| Moustached Puffbird | Malacoptila mystacalis | Malacoptila mystacalis |
| Moustached Warbler | Acrocephalus melanopogon | Acrocephalus melanopogon |
| Moustached Woodcreeper | Xiphocolaptes falcirostris | Xiphocolaptes falcirostris |
| Moustached Wren | Thryothorus genibarbis | Thryothorus genibarbis |
| Mugimaki Flycatcher | Ficedula mugimaki | Ficedula mugimaki |
| Mulga Parrot | Psephotus varius | Psephotus varius |
| Murphy's Petrel | Pterodroma ultima | Pterodroma ultima |
| Muscovy Duck | Cairina moschata | Cairina moschata |
| Musician Wren | Cyphorhinus aradus | Cyphorhinus aradus |
| Musk Duck | Biziura lobata | Biziura lobata |
| Musk Lorikeet | Glossopsitta concinna | Glossopsitta concinna |
| Mute Swan | Cygnus olor | Cygnus olor |
| Mysterious Starling | Aplonis mavornata | Aplonis mavornata |
| Nacunda Nighthawk | Podager nacunda | Podager nacunda |
| Naked-faced Barbet | Gymnobucco calvus | Gymnobucco calvus |
| Naked-faced Spiderhunter | Arachnothera clarae | Arachnothera clarae |
| Namaqua Dove | Oena capensis | Oena capensis |
| Namaqua Sandgrouse | Pterocles namaqua | Pterocles namaqua |
| Napo Sabrewing | Campylopterus villaviscensio | Campylopterus villaviscensio |
| Narcissus Flycatcher | Ficedula narcissina | Ficedula narcissina |
| Narcondam Hornbill | Aceros narcondami | Aceros narcondami |
| Narino Tapaculo | Scytalopus vicinior | Scytalopus vicinior |
| Narrow-billed Antwren | Formicivora iheringi | Formicivora iheringi |
| Narrow-billed Tody | Todus angustirostris | Todus angustirostris |
| Narrow-billed Woodcreeper | Lepidocolaptes angustirostris | Lepidocolaptes angustirostris |
| Narrow-tailed Emerald | Chlorostilbon stenura | Chlorostilbon stenura |
| Narrow-tailed Starling | Poeoptera lugubris | Poeoptera lugubris |
| Nashville Warbler | Vermivora ruficapilla | Vermivora ruficapilla |
| Natal Francolin | Francolinus natalensis | Francolinus natalensis |
| Neblina Metaltail | Metallura odomae | Metallura odomae |
| Necklaced Spinetail | Synallaxis stictothorax | Synallaxis stictothorax |
| Needle-billed Hermit | Phaethornis philippii | Phaethornis philippii |
| Neergaard's Sunbird | Nectarinia neergaardi | Nectarinia neergaardi |
| Nelicourvi Weaver | Ploceus nelicourvi | Ploceus nelicourvi |
| Nepal Fulvetta | Alcippe nipalensis | Alcippe nipalensis |
| New Britain Bronzewing | Henicophaps foersteri | Henicophaps foersteri |
| New Britain Friarbird | Philemon cockerelli | Philemon cockerelli |
| New Britain Rail | Rallus insignis | Gallirallus insignis |
| New Caledonian Crow | Corvus moneduloides | Corvus moneduloides |
| New Caledonian Friarbird | Philemon diemenensis | Philemon diemenensis |
| New Caledonian Lorikeet | Charmosyna diadema | Charmosyna diadema |
| New Caledonian Owlet-Nightjar | Aegotheles savesi | Aegotheles savesi |
| New Caledonian Whistler | Pachycephala caledonica | Pachycephala caledonica |
| New Guinea Flightless Rail | Amaurornis ineptus | Megacrex inepta |
| New Guinea Friarbird | Philemon novaeguineae | Philemon novaeguineae |
| New Ireland Friarbird | Philemon eichhorni | Philemon eichhorni |
| New Zealand Bellbird | Anthornis melanura | Anthornis melanura |
| New Zealand Falcon | Falco novaezeelandiae | Falco novaeseelandiae |
| New Zealand Pigeon | Hemiphaga novaeseelandiae | Hemiphaga novaeseelandiae |
| New Zealand Robin | Petroica australis | Petroica australis |
| New Zealand Scaup | Aythya novaeseelandiae | Aythya novaeseelandiae |
| Newton's Fiscal | Lanius newtoni | Lanius newtoni |
| Nicaraguan Grackle | Quiscalus nicaraguensis | Quiscalus nicaraguensis |
| Niceforo's Wren | Thryothorus nicefori | Thryothorus nicefori |
| Nicobar Bulbul | Hypsipetes nicobariensis | Hypsipetes nicobariensis |
| Nicobar Pigeon | Caloenas nicobarica | Caloenas nicobarica |
| Night Parrot | Geopsittacus occidentalis | Geopsittacus occidentalis |
| Nightingale Finch | Nesospiza acunhae | Nesospiza acunhae |
| Nihoa Finch | Telespyza ultima | Telespiza ultima |
| Nilgiri Pipit | Anthus nilghiriensis | Anthus nilghiriensis |
| Nkulengu Rail | Himantornis haematopus | Himantornis haematopus |
| Noble Snipe | Gallinago nobilis | Gallinago nobilis |
| Nocturnal Curassow | Nothocrax urumutum | Nothocrax urumutum |
| Noisy Friarbird | Philemon corniculatus | Philemon corniculatus |
| Noisy Miner | Manorina melanocephala | Manorina melanocephala |
| Noisy Pitta | Pitta versicolor | Pitta versicolor |
| Northern Bentbill | Oncostoma cinereigulare | Oncostoma cinereigulare |
| Northern Bobwhite | Colinus virginianus | Colinus virginianus |
| Northern Brown-throated Weaver | Ploceus castanops | Ploceus castanops |
| Northern Brownbul | Phyllastrephus strepitans | Phyllastrephus strepitans |
| Northern Cassowary | Casuarius unappendiculatus | Casuarius unappendiculatus |
| Northern Crombec | Sylvietta brachyura | Sylvietta brachyura |
| Northern Double-collared Sunbird | Nectarinia preussi | Nectarinia preussi |
| Northern Fantail | Rhipidura rufiventris | Rhipidura rufiventris |
| Northern Fulmar | Fulmarus glacialis | Fulmarus glacialis |
| Northern Gannet | Morus bassanus | Morus bassanus |
| Northern Goshawk | Accipiter gentilis | Accipiter gentilis |
| Northern Jacana | Jacana spinosa | Jacana spinosa |
| Northern Lapwing | Vanellus vanellus | Vanellus vanellus |
| Northern Mockingbird | Mimus polyglottos | Mimus polyglottos |
| Northern Oriole | Icterus galbula | Icterus galbula |
| Northern Pintail | Anas acuta | Anas acuta |
| Northern Rosella | Platycercus venustus | Platycercus venustus |
| Northern Rough-winged Swallow | Stelgidopteryx serripennis | Stelgidopteryx serripennis |
| Northern Screamer | Chauna chavaria | Chauna chavaria |
| Northern Wheatear | Oenanthe oenanthe | Oenanthe oenanthe |
| Northwestern Crow | Corvus caurinus | Corvus caurinus |
| Nubian Bustard | Neotis nuba | Neotis nuba |
| Nubian Nightjar | Caprimulgus nubicus | Caprimulgus nubicus |
| Nubian Woodpecker | Campethera nubica | Campethera nubica |
| Nukupuu | Hemignathus lucidus | Hemignathus lucidus |
| Nuttall's Woodpecker | Picoides nuttallii | Picoides nuttallii |
| Nyanza Swift | Apus niansae | Apus niansae |
| Oahu Creeper | Paroreomyza maculata | Paroreomyza maculata |
| Oasis Hummingbird | Rhodopis vesper | Rhodopis vesper |
| Oaxaca Sparrow | Aimophila notosticta | Aimophila notosticta |
| Obbia Lark | Spizocorys obbiensis | Spizocorys obbiensis |
| Obscure Berrypecker | Melanocharis arfakiana | Melanocharis arfakiana |
| Obscure Honeyeater | Meliphaga obscura | Lichenostomus obscurus |
| Ocellated Antbird | Phaenostictus mcleannani | Phaenostictus mcleannani |
| Ocellated Crake | Coturnicops schomburgkii | Micropygia schomburgkii |
| Ocellated Poorwill | Nyctiphrynus ocellatus | Nyctiphrynus ocellatus |
| Ocellated Quail | Cyrtonyx ocellatus | Cyrtonyx ocellatus |
| Ocellated Tapaculo | Acropternis orthonyx | Acropternis orthonyx |
| Ocellated Thrasher | Toxostoma ocellatum | Toxostoma ocellatum |
| Ocellated Turkey | Agriocharis ocellata | Agriocharis ocellata |
| Ocellated Woodcreeper | Xiphorhynchus ocellatus | Xiphorhynchus ocellatus |
| Ochraceous Attila | Attila torridus | Attila torridus |
| Ochraceous Pewee | Contopus ochraceus | Contopus ochraceus |
| Ochraceous Piculet | Picumnus limae | Picumnus limae |
| Ochraceous-breasted Flycatcher | Myiophobus ochraceiventris | Myiophobus ochraceiventris |
| Ochre-bellied Flycatcher | Mionectes oleagineus | Mionectes oleagineus |
| Ochre-breasted Antpitta | Grallaricula flavirostris | Grallaricula flavirostris |
| Ochre-breasted Pipit | Anthus nattereri | Anthus nattereri |
| Ochre-breasted Tanager | Chlorothraupis stolzmanni | Chlorothraupis stolzmanni |
| Ochre-browed Thistletail | Schizoeaca coryi | Schizoeaca coryi |
| Ochre-cheeked Spinetail | Synallaxis scutatus | Synallaxis scutata |
| Ochre-flanked Tapaculo | Eugralla paradoxa | Eugralla paradoxa |
| Ochre-fronted Antpitta | Grallaricula ochraceifrons | Grallaricula ochraceifrons |
| Ochre-rumped Antbird | Drymophila ochropyga | Drymophila ochropyga |
| Ochre-striped Antpitta | Grallaria dignissima | Grallaria dignissima |
| Oilbird | Steatornis caripensis | Steatornis caripensis |
| Okinawa Rail | Rallus okinawae | Gallirallus okinawae |
| Oleaginous Hemispingus | Hemispingus frontalis | Hemispingus frontalis |
| Olivaceous Elaenia | Elaenia mesoleuca | Elaenia mesoleuca |
| Olivaceous Flatbill | Rhynchocyclus olivaceus | Rhynchocyclus olivaceus |
| Olivaceous Greenlet | Hylophilus olivaceus | Hylophilus olivaceus |
| Olivaceous Piculet | Picumnus olivaceus | Picumnus olivaceus |
| Olivaceous Piha | Lipaugus cryptolophus | Lipaugus cryptolophus |
| Olivaceous Siskin | Carduelis olivacea | Carduelis olivacea |
| Olivaceous Thornbill | Chalcostigma olivaceum | Chalcostigma olivaceum |
| Olivaceous Warbler | Hippolais pallida | Hippolais pallida |
| Olivaceous Woodcreeper | Sittasomus griseicapillus | Sittasomus griseicapillus |
| Olive Finch | Lysurus castaneiceps | Lysurus castaneiceps |
| Olive Flycatcher | Mitrephanes olivaceus | Mitrephanes olivaceus |
| Olive Ibis | Lampribis olivacea | Bostrychia olivacea |
| Olive Long-tailed Cuckoo | Cercococcyx olivinus | Cercococcyx olivinus |
| Olive Manakin | Chloropipo uniformis | Chloropipo uniformis |
| Olive Sparrow | Arremonops rufivirgatus | Arremonops rufivirgatus |
| Olive Spinetail | Certhiaxis obsoleta | Cranioleuca obsoleta |
| Olive Sunbird | Nectarinia olivacea | Nectarinia olivacea |
| Olive Thrush | Turdus olivaceus | Turdus olivaceus |
| Olive Warbler | Peucedramus taeniatus | Peucedramus taeniatus |
| Olive Whistler | Pachycephala olivacea | Pachycephala olivacea |
| Olive Woodpecker | Dendropicos griseocephalus | Dendropicos griseocephalus |
| Olive-backed Euphonia | Euphonia gouldi | Euphonia gouldi |
| Olive-backed Flowerpecker | Prionochilus olivaceus | Prionochilus olivaceus |
| Olive-backed Foliage-gleaner | Automolus infuscatus | Automolus infuscatus |
| Olive-backed Oriole | Oriolus sagittatus | Oriolus sagittatus |
| Olive-backed Sunbird | Nectarinia jugularis | Nectarinia jugularis |
| Olive-backed Tanager | Mitrospingus oleagineus | Mitrospingus oleagineus |
| Olive-backed Woodcreeper | Xiphorhynchus triangularis | Xiphorhynchus triangularis |
| Olive-backed Woodpecker | Dinopium rafflesii | Dinopium rafflesii |
| Olive-bellied Sunbird | Nectarinia chloropygia | Nectarinia chloropygia |
| Olive-capped Flowerpecker | Dicaeum nigrilore | Dicaeum nigrilore |
| Olive-capped Warbler | Dendroica pityophila | Dendroica pityophila |
| Olive-crowned Flowerpecker | Dicaeum pectorale | Dicaeum pectorale |
| Olive-crowned Yellowthroat | Geothlypis semiflava | Geothlypis semiflava |
| Olive-green Camaroptera | Camaroptera chloronota | Camaroptera chloronota |
| Olive-green Tanager | Orthogonys chloricterus | Orthogonys chloricterus |
| Olive-green Tyrannulet | Phylloscartes virescens | Phylloscartes virescens |
| Olive-sided Flycatcher | Contopus borealis | Contopus borealis |
| Olive-spotted Hummingbird | Leucippus chlorocercus | Leucippus chlorocercus |
| Olive-striped Flycatcher | Mionectes olivaceus | Mionectes olivaceus |
| Olive-tree Warbler | Hippolais olivetorum | Hippolais olivetorum |
| Olive-yellow Robin | Poecilodryas placens | Poecilodryas placens |
| Olrog's Cinclodes | Cinclodes olrogi | Cinclodes olrogi |
| Opal-crowned Manakin | Pipra iris | Pipra iris |
| Opal-crowned Tanager | Tangara callophrys | Tangara callophrys |
| Opal-rumped Tanager | Tangara velia | Tangara velia |
| Orange Bullfinch | Pyrrhula aurantiaca | Pyrrhula aurantiaca |
| Orange Chat | Epthianura aurifrons | Epthianura aurifrons |
| Orange Dove | Ptilinopus victor | Ptilinopus victor |
| Orange Oriole | Icterus auratus | Icterus auratus |
| Orange Weaver | Ploceus aurantius | Ploceus aurantius |
| Orange-backed Woodpecker | Reinwardtipicus validus | Reinwardtipicus validus |
| Orange-banded Flycatcher | Myiophobus lintoni | Myiophobus lintoni |
| Orange-bellied Euphonia | Euphonia xanthogaster | Euphonia xanthogaster |
| Orange-bellied Flowerpecker | Dicaeum trigonostigma | Dicaeum trigonostigma |
| Orange-bellied Leafbird | Chloropsis hardwickei | Chloropsis hardwickii |
| Orange-bellied Parrot | Neophema chrysogaster | Neophema chrysogaster |
| Orange-bellied Trogon | Trogon aurantiiventris | Trogon aurantiiventris |
| Orange-billed Sparrow | Arremon aurantiirostris | Arremon aurantiirostris |
| Orange-breasted Bunting | Passerina leclancherii | Passerina leclancherii |
| Orange-breasted Falcon | Falco deiroleucus | Falco deiroleucus |
| Orange-breasted Sunbird | Nectarinia violacea | Nectarinia violacea |
| Orange-breasted Trogon | Harpactes oreskios | Harpactes oreskios |
| Orange-browed Hemispingus | Hemispingus calophrys | Hemispingus calophrys |
| Orange-cheeked Honeyeater | Oreornis chrysogenys | Oreornis chrysogenys |
| Orange-cheeked Parrot | Pionopsitta barrabandi | Pionopsitta barrabandi |
| Orange-cheeked Waxbill | Estrilda melpoda | Estrilda melpoda |
| Orange-chinned Parakeet | Brotogeris jugularis | Brotogeris jugularis |
| Orange-crested Flycatcher | Myiophobus phoenicomitra | Myiophobus phoenicomitra |
| Orange-crowned Euphonia | Euphonia saturata | Euphonia saturata |
| Orange-crowned Oriole | Icterus auricapillus | Icterus auricapillus |
| Orange-crowned Warbler | Vermivora celata | Vermivora celata |
| Orange-eared Tanager | Chlorochrysa calliparaea | Chlorochrysa calliparaea |
| Orange-fronted Barbet | Capito squamatus | Capito squamatus |
| Orange-fronted Plushcrown | Metopothrix aurantiacus | Metopothrix aurantiacus |
| Orange-headed Tanager | Thlypopsis sordida | Thlypopsis sordida |
| Orange-spotted Bulbul | Pycnonotus bimaculatus | Pycnonotus bimaculatus |
| Orange-throated Sunangel | Heliangelus mavors | Heliangelus mavors |
| Orange-throated Tanager | Wetmorethraupis sterrhopteron | Wetmorethraupis sterrhopteron |
| Orange-winged Pytilia | Pytilia afra | Pytilia afra |
| Orangequit | Euneornis campestris | Euneornis campestris |
| Orchard Oriole | Icterus spurius | Icterus spurius |
| Oriental Cuckoo | Cuculus saturatus | Cuculus saturatus |
| Oriental Hobby | Falco severus | Falco severus |
| Oriental White-eye | Zosterops palpebrosa | Zosterops palpebrosus |
| Oriente Warbler | Teretistris fornsi | Teretistris fornsi |
| Orinocan Saltator | Saltator orenocensis | Saltator orenocensis |
| Orinoco Goose | Neochen jubatus | Neochen jubata |
| Orinoco Softtail | Thripophaga cherriei | Thripophaga cherriei |
| Oriole Blackbird | Gymnomystax mexicanus | Gymnomystax mexicanus |
| Oriole Warbler | Hypergerus atriceps | Hypergerus atriceps |
| Ornate Antwren | Myrmotherula ornata | Myrmotherula ornata |
| Ornate Flycatcher | Myiotriccus ornatus | Myiotriccus ornatus |
| Ornate Tinamou | Nothoprocta ornata | Nothoprocta ornata |
| Orphean Warbler | Sylvia hortensis | Sylvia hortensis |
| Ortolan Bunting | Emberiza hortulana | Emberiza hortulana |
| Osprey | Pandion haliaetus | Pandion haliaetus |
| Ostrich | Struthio camelus | Struthio camelus |
| Ou | Psittirostra psittacea | Psittirostra psittacea |
| Oustalet's Tyrannulet | Phylloscartes oustaleti | Phylloscartes oustaleti |
| Ovenbird | Seiurus aurocapillus | Seiurus aurocapillus |
| Pacific Black Duck | Anas superciliosa | Anas superciliosa |
| Pacific Elaenia | Myiopagis subplacens | Myiopagis subplacens |
| Pacific Gull | Gabianus pacificus | Larus pacificus |
| Pacific Parakeet | Aratinga strenua | Aratinga strenua |
| Pacific Parrotlet | Forpus coelestis | Forpus coelestis |
| Pacific Swallow | Hirundo tahitica | Hirundo tahitica |
| Paddyfield Pipit | Anthus rufulus | Anthus rufulus |
| Paddyfield Warbler | Acrocephalus agricola | Acrocephalus agricola |
| Paint-billed Crake | Porzana erythrops | Neocrex erythrops |
| Painted Bunting | Passerina ciris | Passerina ciris |
| Painted Francolin | Francolinus rufopictus | Francolinus pictus |
| Painted Honeyeater | Conopophila picta | Grantiella picta |
| Painted Redstart | Myioborus pictus | Myioborus pictus |
| Painted Sandgrouse | Pterocles indicus | Pterocles indicus |
| Painted Spurfowl | Galloperdix lunulata | Galloperdix lunulata |
| Painted Stork | Mycteria leucocephala | Mycteria leucocephala |
| Palau Fantail | Rhipidura lepida | Rhipidura lepida |
| Palawan Flowerpecker | Dicaeum pygmaeum | Prionochilus plateni |
| Palawan Flycatcher | Ficedula platenae | Ficedula platenae |
| Palawan Hornbill | Anthracoceros marchei | Anthracoceros marchei |
| Palawan Peacock-Pheasant | Polyplectron emphanum | Polyplectron emphanum |
| Palawan Tit | Parus amabilis | Parus amabilis |
| Pale Chanting-Goshawk | Melierax canorus | Melierax canorus |
| Pale Cicadabird | Coracina ceramensis | Coracina ceramensis |
| Pale Flycatcher | Melaenornis pallidus | Bradornis pallidus |
| Pale Prinia | Prinia somalica | Prinia somalica |
| Pale Thrush | Turdus pallidus | Turdus pallidus |
| Pale-bellied Hermit | Phaethornis anthophilus | Phaethornis anthophilus |
| Pale-bellied Mourner | Rhytipterna immunda | Rhytipterna immunda |
| Pale-bellied White-eye | Zosterops consobrinorum | Zosterops consobrinorum |
| Pale-billed Antpitta | Grallaria carrikeri | Grallaria carrikeri |
| Pale-billed Hornbill | Tockus pallidirostris | Tockus pallidirostris |
| Pale-billed Hornero | Furnarius torridus | Furnarius torridus |
| Pale-billed Sicklebill | Drepanornis bruijnii | Epimachus bruijnii |
| Pale-billed Woodpecker | Campephilus guatemalensis | Campephilus guatemalensis |
| Pale-breasted Spinetail | Synallaxis albescens | Synallaxis albescens |
| Pale-breasted Thrush | Turdus leucomelas | Turdus leucomelas |
| Pale-browed Tinamou | Crypturellus transfasciatus | Crypturellus transfasciatus |
| Pale-browed Treehunter | Cichlocolaptes leucophrus | Cichlocolaptes leucophrus |
| Pale-capped Pigeon | Columba punicea | Columba punicea |
| Pale-crested Woodpecker | Celeus lugubris | Celeus lugubris |
| Pale-edged Flycatcher | Myiarchus cephalotes | Myiarchus cephalotes |
| Pale-eyed Thrush | Platycichla leucops | Platycichla leucops |
| Pale-faced Bare-eye | Skutchia borbae | Skutchia borbae |
| Pale-footed Swallow | Notiochelidon flavipes | Notiochelidon flavipes |
| Pale-headed Jacamar | Brachygalba goeringi | Brachygalba goeringi |
| Pale-headed Rosella | Platycercus adscitus | Platycercus adscitus |
| Pale-legged Hornero | Furnarius leucopus | Furnarius leucopus |
| Pale-legged Warbler | Basileuterus signatus | Basileuterus signatus |
| Pale-rumped Swift | Chaetura egregia | Chaetura egregia |
| Pale-rumped Warbler | Phylloscopus chloronotus | Phylloscopus chloronotus |
| Pale-tailed Barbthroat | Threnetes leucurus | Threnetes leucurus |
| Pale-tipped Tyrannulet | Inezia subflava | Inezia subflava |
| Pale-vented Thrush | Turdus obsoletus | Turdus obsoletus |
| Pale-winged Indigobird | Vidua wilsoni | Vidua wilsoni |
| Pale-winged Starling | Onychognathus nabouroup | Onychognathus nabouroup |
| Palila | Loxioides bailleui | Loxioides bailleui |
| Pallas's Rosefinch | Carpodacus roseus | Carpodacus roseus |
| Pallid Cuckoo | Cuculus pallidus | Cuculus pallidus |
| Pallid Dove | Leptotila pallida | Leptotila pallida |
| Pallid Harrier | Circus macrourus | Circus macrourus |
| Pallid Spinetail | Certhiaxis pallida | Cranioleuca pallida |
| Pallid Swift | Apus pallidus | Apus pallidus |
| Palm Cockatoo | Probosciger aterrimus | Probosciger aterrimus |
| Palm Crow | Corvus palmarum | Corvus palmarum |
| Palm Lorikeet | Charmosyna palmarum | Charmosyna palmarum |
| Palm Tanager | Thraupis palmarum | Thraupis palmarum |
| Palm Warbler | Dendroica palmarum | Dendroica palmarum |
| Palm-nut Vulture | Gypohierax angolensis | Gypohierax angolensis |
| Palmchat | Dulus dominicus | Dulus dominicus |
| Paltry Tyrannulet | Zimmerius vilissimus | Zimmerius vilissimus |
| Panama Flycatcher | Myiarchus panamensis | Myiarchus panamensis |
| Pangani Longclaw | Macronyx aurantiigula | Macronyx aurantiigula |
| Papuan Frogmouth | Podargus papuensis | Podargus papuensis |
| Papuan Treecreeper | Climacteris placens | Cormobates placens |
| Papyrus Canary | Serinus koliensis | Serinus koliensis |
| Paradise Jacamar | Galbula dea | Galbula dea |
| Paradise Parrot | Psephotus pulcherrimus | Psephotus pulcherrimus |
| Paradise Riflebird | Ptiloris paradiseus | Ptiloris paradiseus |
| Paradise Shelduck | Tadorna variegata | Tadorna variegata |
| Paradise Tanager | Tangara chilensis | Tangara chilensis |
| Parakeet Auklet | Cyclorrhynchus psittacula | Cyclorrhynchus psittacula |
| Paramo Pipit | Anthus bogotensis | Anthus bogotensis |
| Paramo Seedeater | Catamenia homochroa | Catamenia homochroa |
| Parasitic Weaver | Anomalospiza imberbis | Anomalospiza imberbis |
| Pardusco | Nephelornis oneillei | Nephelornis oneilli |
| Parrot Crossbill | Loxia pytyopsittacus | Loxia pytyopsittacus |
| Parrot-billed Seedeater | Sporophila peruviana | Sporophila peruviana |
| Parrot-billed Sparrow | Passer gongonensis | Passer gongonensis |
| Patagonian Canastero | Thripophaga patagonica | Asthenes patagonica |
| Patagonian Mockingbird | Mimus patagonicus | Mimus patagonicus |
| Patagonian Tinamou | Tinamotis ingoufi | Tinamotis ingoufi |
| Pavonine Cuckoo | Dromococcyx pavoninus | Dromococcyx pavoninus |
| Pavonine Quetzal | Pharomachrus pavoninus | Pharomachrus pavoninus |
| Peacock Coquette | Lophornis pavonina | Lophornis pavoninus |
| Pearl Kite | Gampsonyx swainsonii | Gampsonyx swainsonii |
| Pearl-bellied White-eye | Zosterops grayi | Zosterops grayi |
| Pearl-breasted Swallow | Hirundo dimidiata | Hirundo dimidiata |
| Pearl-spotted Owlet | Glaucidium perlatum | Glaucidium perlatum |
| Pearled Treerunner | Margarornis squamiger | Margarornis squamiger |
| Pearly Antshrike | Megastictus margaritatus | Megastictus margaritatus |
| Pearly-breasted Conebill | Conirostrum margaritae | Conirostrum margaritae |
| Pearly-breasted Cuckoo | Coccyzus euleri | Coccyzus euleri |
| Pearly-eyed Thrasher | Margarops fuscatus | Margarops fuscatus |
| Pectoral Antwren | Herpsilochmus pectoralis | Herpsilochmus pectoralis |
| Pectoral Sandpiper | Calidris melanotos | Calidris melanotos |
| Pectoral Sparrow | Arremon taciturnus | Arremon taciturnus |
| Pectoral-patch Cisticola | Cisticola brunnescens | Cisticola brunnescens |
| Pelagic Cormorant | Phalacrocorax pelagicus | Phalacrocorax pelagicus |
| Pemba White-eye | Zosterops vaughani | Zosterops vaughani |
| Pennant-winged Nightjar | Macrodipteryx vexillarius | Macrodipteryx vexillarius |
| Peregrine Falcon | Falco peregrinus | Falco peregrinus |
| Perija Metaltail | Metallura iracunda | Metallura iracunda |
| Perija Thistletail | Schizoeaca perijana | Schizoeaca perijana |
| Peruvian Antpitta | Grallaricula peruviana | Grallaricula peruviana |
| Peruvian Booby | Sula variegata | Sula variegata |
| Peruvian Piedtail | Phlogophilus harterti | Phlogophilus harterti |
| Peruvian Plantcutter | Phytotoma raimondii | Phytotoma raimondii |
| Peruvian Recurvebill | Philydor ucayalae | Simoxenops ucayalae |
| Peruvian Sheartail | Thaumastura cora | Thaumastura cora |
| Pesquet's Parrot | Psittrichas fulgidus | Psittrichas fulgidus |
| Phainopepla | Phainopepla nitens | Phainopepla nitens |
| Pheasant Coucal | Centropus phasianinus | Centropus phasianinus |
| Pheasant Cuckoo | Dromococcyx phasianellus | Dromococcyx phasianellus |
| Pheasant Pigeon | Otidiphaps nobilis | Otidiphaps nobilis |
| Pheasant-tailed Jacana | Hydrophasianus chirurgus | Hydrophasianus chirurgus |
| Philadelphia Vireo | Vireo philadelphicus | Vireo philadelphicus |
| Philippine Coucal | Centropus viridis | Centropus viridis |
| Philippine Duck | Anas luzonica | Anas luzonica |
| Philippine Falconet | Microhierax erythrogenys | Microhierax erythrogenys |
| Philippine Frogmouth | Batrachostomus septimus | Batrachostomus septimus |
| Philippine Nightjar | Caprimulgus manillensis | Caprimulgus manillensis |
| Philippine Trogon | Harpactes ardens | Harpactes ardens |
| Phoenix Petrel | Pterodroma alba | Pterodroma alba |
| Piapiac | Ptilostomus afer | Ptilostomus afer |
| Picazuro Pigeon | Columba picazuro | Columba picazuro |
| Pied Avocet | Recurvirostra avosetta | Recurvirostra avosetta |
| Pied Barbet | Tricholaema leucomelas | Tricholaema leucomelas |
| Pied Cormorant | Phalacrocorax varius | Phalacrocorax varius |
| Pied Crow | Corvus albus | Corvus albus |
| Pied Currawong | Strepera graculina | Strepera graculina |
| Pied Falconet | Microhierax melanoleucus | Microhierax melanoleucus |
| Pied Fantail | Rhipidura javanica | Rhipidura javanica |
| Pied Goshawk | Accipiter albogularis | Accipiter albogularis |
| Pied Harrier | Circus melanoleucos | Circus melanoleucos |
| Pied Heron | Egretta picata | Ardea picata |
| Pied Honeyeater | Certhionyx variegatus | Certhionyx variegatus |
| Pied Monarch | Monarcha barbatus | Arses kaupi |
| Pied Oystercatcher | Haematopus longirostris | Haematopus longirostris |
| Pied Puffbird | Notharchus tectus | Notharchus tectus |
| Pied Triller | Lalage nigra | Lalage nigra |
| Pied Wheatear | Oenanthe pleschanka | Oenanthe pleschanka |
| Pied-billed Grebe | Podilymbus podiceps | Podilymbus podiceps |
| Pied-winged Swallow | Hirundo leucosoma | Hirundo leucosoma |
| Pigeon Guillemot | Cepphus columba | Cepphus columba |
| Pileated Finch | Coryphospingus pileatus | Coryphospingus pileatus |
| Pileated Flycatcher | Xenotriccus mexicanus | Xenotriccus mexicanus |
| Pileated Woodpecker | Dryocopus pileatus | Dryocopus pileatus |
| Pin-tailed Manakin | Ilicura militaris | Ilicura militaris |
| Pin-tailed Whydah | Vidua macroura | Vidua macroura |
| Pine Bunting | Emberiza leucocephalos | Emberiza leucocephalos |
| Pine Flycatcher | Empidonax affinis | Empidonax affinis |
| Pine Grosbeak | Pinicola enucleator | Pinicola enucleator |
| Pine Siskin | Carduelis pinus | Carduelis pinus |
| Pine Warbler | Dendroica pinus | Dendroica pinus |
| Pink Pigeon | Columba mayeri | Columba mayeri |
| Pink Robin | Petroica rodinogaster | Petroica rodinogaster |
| Pink-backed Pelican | Pelecanus rufescens | Pelecanus rufescens |
| Pink-billed Lark | Spizocorys conirostris | Spizocorys conirostris |
| Pink-billed Parrot-finch | Erythrura kleinschmidti | Erythrura kleinschmidti |
| Pink-breasted Lark | Mirafra poecilosterna | Mirafra poecilosterna |
| Pink-browed Rosefinch | Carpodacus rodochrous | Carpodacus rodochrous |
| Pink-eared Duck | Malacorhynchus membranaceus | Malacorhynchus membranaceus |
| Pink-footed Goose | Anser brachyrhynchus | Anser brachyrhynchus |
| Pink-footed Puffback | Dryoscopus angolensis | Dryoscopus angolensis |
| Pink-footed Shearwater | Puffinus creatopus | Puffinus creatopus |
| Pink-headed Duck | Rhodonessa caryophyllacea | Rhodonessa caryophyllacea |
| Pink-headed Warbler | Ergaticus versicolor | Ergaticus versicolor |
| Pink-throated Becard | Pachyramphus minor | Pachyramphus minor |
| Pink-throated Brilliant | Heliodoxa gularis | Heliodoxa gularis |
| Pinnated Bittern | Botaurus pinnatus | Botaurus pinnatus |
| Pintail Snipe | Gallinago stenura | Gallinago stenura |
| Pinyon Jay | Gymnorhinus cyanocephalus | Gymnorhinus cyanocephalus |
| Piping Cisticola | Cisticola fulvicapilla | Cisticola fulvicapillus |
| Piping Crow | Corvus typicus | Corvus typicus |
| Piping Hornbill | Ceratogymna fistulator | Ceratogymna fistulator |
| Piping Plover | Charadrius melodus | Charadrius melodus |
| Piratic Flycatcher | Legatus leucophaius | Legatus leucophaius |
| Pirre Warbler | Basileuterus ignotus | Basileuterus ignotus |
| Plain Antvireo | Dysithamnus mentalis | Dysithamnus mentalis |
| Plain Chachalaca | Ortalis vetula | Ortalis vetula |
| Plain Flowerpecker | Dicaeum concolor | Dicaeum concolor |
| Plain Friarbird | Philemon inornatus | Philemon inornatus |
| Plain Greenbul | Pycnonotus curvirostris | Andropadus curvirostris |
| Plain Nightjar | Caprimulgus inornatus | Caprimulgus inornatus |
| Plain Parakeet | Brotogeris tirica | Brotogeris tirica |
| Plain Pigeon | Columba inornata | Columba inornata |
| Plain Softtail | Phacellodomus fusciceps | Thripophaga fusciceps |
| Plain Swift | Apus unicolor | Apus unicolor |
| Plain Titmouse | Parus inornatus | Parus inornatus |
| Plain Tyrannulet | Inezia inornata | Inezia inornata |
| Plain Wren | Thryothorus modestus | Thryothorus modestus |
| Plain Xenops | Xenops minutus | Xenops minutus |
| Plain-backed Antpitta | Grallaria haplonota | Grallaria haplonota |
| Plain-backed Pipit | Anthus leucophrys | Anthus leucophrys |
| Plain-backed Sunbird | Anthreptes reichenowi | Anthreptes reichenowi |
| Plain-bellied Emerald | Amazilia leucogaster | Amazilia leucogaster |
| Plain-breasted Earthcreeper | Upucerthia jelskii | Upucerthia jelskii |
| Plain-breasted Piculet | Picumnus castelnau | Picumnus castelnau |
| Plain-brown Woodcreeper | Dendrocincla fuliginosa | Dendrocincla fuliginosa |
| Plain-capped Starthroat | Heliomaster constantii | Heliomaster constantii |
| Plain-crested Elaenia | Elaenia cristata | Elaenia cristata |
| Plain-crowned Spinetail | Synallaxis gujanensis | Synallaxis gujanensis |
| Plain-flanked Rail | Rallus wetmorei | Rallus wetmorei |
| Plain-mantled Tit-Spinetail | Leptasthenura aegithaloides | Leptasthenura aegithaloides |
| Plain-tailed Wren | Thryothorus euophrys | Thryothorus euophrys |
| Plain-throated Antwren | Myrmotherula hauxwelli | Myrmotherula hauxwelli |
| Plain-throated Sunbird | Anthreptes malacensis | Anthreptes malacensis |
| Plain-winged Antwren | Myrmotherula behni | Myrmotherula behni |
| Plaintive Cuckoo | Cacomantis merulinus | Cacomantis merulinus |
| Planalto Hermit | Phaethornis pretrei | Phaethornis pretrei |
| Planalto Tyrannulet | Phyllomyias fasciatus | Phyllomyias fasciatus |
| Planalto Woodcreeper | Dendrocolaptes platyrostris | Dendrocolaptes platyrostris |
| Plum-headed Finch | Aidemosyne modesta | Neochmia modesta |
| Plum-headed Parakeet | Psittacula cyanocephala | Psittacula cyanocephala |
| Plum-throated Cotinga | Cotinga maynana | Cotinga maynana |
| Plumbeous Antbird | Myrmeciza hyperythra | Myrmeciza hyperythra |
| Plumbeous Antvireo | Dysithamnus plumbeus | Dysithamnus plumbeus |
| Plumbeous Euphonia | Euphonia plumbea | Euphonia plumbea |
| Plumbeous Hawk | Leucopternis plumbea | Leucopternis plumbea |
| Plumbeous Ibis | Harpiprion caerulescens | Theristicus caerulescens |
| Plumbeous Kite | Ictinia plumbea | Ictinia plumbea |
| Plumbeous Pigeon | Columba plumbea | Columba plumbea |
| Plumbeous Rail | Rallus sanguinolentus | Pardirallus sanguinolentus |
| Plumbeous Seedeater | Sporophila plumbea | Sporophila plumbea |
| Plumbeous Warbler | Dendroica plumbea | Dendroica plumbea |
| Plumbeous-backed Thrush | Turdus reevei | Turdus reevei |
| Plumbeous-crowned Tyrannulet | Phyllomyias plumbeiceps | Phyllomyias plumbeiceps |
| Plumed Guineafowl | Guttera plumifera | Guttera plumifera |
| Plush-crested Jay | Cyanocorax chrysops | Cyanocorax chrysops |
| Point-tailed Palmcreeper | Berlepschia rikeri | Berlepschia rikeri |
| Pollen's Vanga | Xenopirostris polleni | Xenopirostris polleni |
| Pompadour Cotinga | Xipholena punicea | Xipholena punicea |
| Powerful Owl | Ninox strenua | Ninox strenua |
| Powerful Woodpecker | Campephilus pollens | Campephilus pollens |
| Prairie Falcon | Falco mexicanus | Falco mexicanus |
| Prairie Warbler | Dendroica discolor | Dendroica discolor |
| Prigogine's Double-collared Sunbird | Nectarinia prigoginei | Nectarinia prigoginei |
| Prigogine's Greenbul | Chlorocichla prigoginei | Chlorocichla prigoginei |
| Principe Seedeater | Serinus rufobrunneus | Serinus rufobrunneus |
| Principe Sunbird | Nectarinia hartlaubii | Nectarinia hartlaubii |
| Principe White-eye | Zosterops ficedulina | Zosterops ficedulinus |
| Pringle's Puffback | Dryoscopus pringlii | Dryoscopus pringlii |
| Prong-billed Barbet | Semnornis frantzii | Semnornis frantzii |
| Prothonotary Warbler | Protonotaria citrea | Protonotaria citrea |
| Puerto Rican Bullfinch | Loxigilla portoricensis | Loxigilla portoricensis |
| Puerto Rican Emerald | Chlorostilbon maugaeus | Chlorostilbon maugaeus |
| Puerto Rican Flycatcher | Myiarchus antillarum | Myiarchus antillarum |
| Puerto Rican Nightjar | Caprimulgus noctitherus | Caprimulgus noctitherus |
| Puerto Rican Tanager | Nesospingus speculiferus | Nesospingus speculiferus |
| Puerto Rican Tody | Todus mexicanus | Todus mexicanus |
| Puerto Rican Vireo | Vireo latimeri | Vireo latimeri |
| Puerto Rican Woodpecker | Melanerpes portoricensis | Melanerpes portoricensis |
| Puff-backed Bulbul | Pycnonotus eutilotus | Pycnonotus eutilotus |
| Puff-backed Honeyeater | Meliphaga aruensis | Meliphaga aruensis |
| Pulitzer's Longbill | Macrosphenus pulitzeri | Macrosphenus pulitzeri |
| Puna Grebe | Podiceps taczanowskii | Podiceps taczanowskii |
| Puna Ibis | Plegadis ridgwayi | Plegadis ridgwayi |
| Puna Miner | Geositta punensis | Geositta punensis |
| Puna Plover | Charadrius alticola | Charadrius alticola |
| Puna Teal | Anas puna | Anas puna |
| Puna Thistletail | Schizoeaca helleri | Schizoeaca helleri |
| Puna Tinamou | Tinamotis pentlandii | Tinamotis pentlandii |
| Puno Canastero | Thripophaga punensis | Asthenes sclateri |
| Purple Cochoa | Cochoa purpurea | Cochoa purpurea |
| Purple Finch | Carpodacus purpureus | Carpodacus purpureus |
| Purple Grenadier | Uraeginthus ianthinogaster | Uraeginthus ianthinogaster |
| Purple Heron | Ardea purpurea | Ardea purpurea |
| Purple Honeycreeper | Cyanerpes caeruleus | Cyanerpes caeruleus |
| Purple Martin | Progne subis | Progne subis |
| Purple Sandpiper | Calidris maritima | Calidris maritima |
| Purple Sunbird | Nectarinia asiatica | Nectarinia asiatica |
| Purple Swamphen | Porphyrio porphyrio | Porphyrio porphyrio |
| Purple-backed Sunbeam | Aglaeactis aliciae | Aglaeactis aliciae |
| Purple-backed Thornbill | Ramphomicron microrhynchum | Ramphomicron microrhynchum |
| Purple-banded Sunbird | Nectarinia bifasciata | Nectarinia bifasciata |
| Purple-bellied Lory | Lorius hypoinochrous | Lorius hypoinochrous |
| Purple-breasted Cotinga | Cotinga cotinga | Cotinga cotinga |
| Purple-breasted Sunbird | Nectarinia purpureiventris | Nectarinia purpureiventris |
| Purple-chested Hummingbird | Amazilia rosenbergi | Amazilia rosenbergi |
| Purple-collared Woodstar | Myrtis fanny | Myrtis fanny |
| Purple-crowned Fairy | Heliothryx barroti | Heliothryx barroti |
| Purple-crowned Lorikeet | Glossopsitta porphyrocephala | Glossopsitta porphyrocephala |
| Purple-gaped Honeyeater | Meliphaga cratitia | Lichenostomus cratitius |
| Purple-naped Lory | Lorius domicellus | Lorius domicella |
| Purple-rumped Sunbird | Nectarinia zeylonica | Nectarinia zeylonica |
| Purple-throated Carib | Eulampis jugularis | Eulampis jugularis |
| Purple-throated Cotinga | Porphyrolaema porphyrolaema | Porphyrolaema porphyrolaema |
| Purple-throated Euphonia | Euphonia chlorotica | Euphonia chlorotica |
| Purple-throated Fruitcrow | Querula purpurata | Querula purpurata |
| Purple-throated Sunangel | Heliangelus viola | Heliangelus viola |
| Purple-throated Woodstar | Philodice mitchellii | Philodice mitchellii |
| Purplish Jacamar | Galbula chalcothorax | Galbula chalcothorax |
| Purplish Jay | Cyanocorax cyanomelas | Cyanocorax cyanomelas |
| Purplish-backed Jay | Cissilopha beecheii | Cyanocorax beecheii |
| Purplish-mantled Tanager | Iridosornis porphyrocephala | Iridosornis porphyrocephala |
| Pycroft's Petrel | Pterodroma pycrofti | Pterodroma pycrofti |
| Pygmy Antwren | Myrmotherula brachyura | Myrmotherula brachyura |
| Pygmy Cormorant | Phalacrocorax pygmeus | Phalacrocorax pygmeus |
| Pygmy Nightjar | Caprimulgus hirundinaceus | Caprimulgus hirundinaceus |
| Pygmy Nuthatch | Sitta pygmaea | Sitta pygmaea |
| Pygmy Sunbird | Anthreptes platurus | Anthreptes platurus |
| Pygmy Swift | Tachornis furcata | Tachornis furcata |
| Pygmy Swiftlet | Collocalia troglodytes | Collocalia troglodytes |
| Pygmy Tit | Psaltria exilis | Psaltria exilis |
| Pygmy White-eye | Oculocincta squamifrons | Oculocincta squamifrons |
| Pyrrhuloxia | Pyrrhuloxia sinuatus | Cardinalis sinuatus |
| Quebracho Crested-Tinamou | Eudromia formosa | Eudromia formosa |
| Rachel's Malimbe | Malimbus racheliae | Malimbus racheliae |
| Racket-tailed Coquette | Discosura longicauda | Discosura longicauda |
| Racket-tailed Roller | Coracias spatulata | Coracias spatulata |
| Radde's Accentor | Prunella ocularis | Prunella ocularis |
| Radjah Shelduck | Tadorna radjah | Tadorna radjah |
| Rain Quail | Coturnix coromandelica | Coturnix coromandelica |
| Rainbow Pitta | Pitta iris | Pitta iris |
| Rainbow Starfrontlet | Coeligena iris | Coeligena iris |
| Rainbow-bearded Thornbill | Chalcostigma herrani | Chalcostigma herrani |
| Rarotonga Starling | Aplonis cinerascens | Aplonis cinerascens |
| Rattling Cisticola | Cisticola chiniana | Cisticola chinianus |
| Razor-billed Curassow | Crax mitu | Mitu tuberosa |
| Razorbill | Alca torda | Alca torda |
| Red Bishop | Euplectes orix | Euplectes orix |
| Red Crossbill | Loxia curvirostra | Loxia curvirostra |
| Red Goshawk | Accipiter radiatus | Erythrotriorchis radiatus |
| Red Kite | Milvus milvus | Milvus milvus |
| Red Knot | Calidris canutus | Calidris canutus |
| Red Lory | Eos bornea | Eos bornea |
| Red Sea Warbler | Sylvia leucomelaena | Sylvia leucomelaena |
| Red Siskin | Carduelis cucullata | Carduelis cucullata |
| Red Spurfowl | Galloperdix spadicea | Galloperdix spadicea |
| Red Warbler | Ergaticus ruber | Ergaticus ruber |
| Red-backed Hawk | Buteo polyosoma | Buteo polyosoma |
| Red-backed Kingfisher | Halcyon pyrrhopygia | Todirhamphus pyrrhopygia |
| Red-backed Mousebird | Colius castanotus | Colius castanotus |
| Red-backed Shrike | Lanius collurio | Lanius collurio |
| Red-banded Fruiteater | Pipreola whitelyi | Pipreola whitelyi |
| Red-bellied Grackle | Hypopyrrhus pyrohypogaster | Hypopyrrhus pyrohypogaster |
| Red-bellied Macaw | Ara manilata | Ara manilata |
| Red-bellied Malimbe | Malimbus erythrogaster | Malimbus erythrogaster |
| Red-bellied Parrot | Poicephalus rufiventris | Poicephalus rufiventris |
| Red-bellied Woodpecker | Melanerpes carolinus | Melanerpes carolinus |
| Red-billed Chough | Pyrrhocorax pyrrhocorax | Pyrrhocorax pyrrhocorax |
| Red-billed Curassow | Crax blumenbachii | Crax blumenbachii |
| Red-billed Dwarf Hornbill | Tockus camurus | Tockus camurus |
| Red-billed Emerald | Chlorostilbon gibsoni | Chlorostilbon gibsoni |
| Red-billed Francolin | Francolinus adspersus | Francolinus adspersus |
| Red-billed Hornbill | Tockus erythrorhynchus | Tockus erythrorhynchus |
| Red-billed Oxpecker | Buphagus erythrorhynchus | Buphagus erythrorhynchus |
| Red-billed Parrot | Pionus sordidus | Pionus sordidus |
| Red-billed Pied Tanager | Lamprospiza melanoleuca | Lamprospiza melanoleuca |
| Red-billed Pigeon | Columba flavirostris | Columba flavirostris |
| Red-billed Quailfinch | Ortygospiza gabonensis | Ortygospiza gabonensis |
| Red-billed Quelea | Quelea quelea | Quelea quelea |
| Red-billed Scythebill | Campylorhamphus trochilirostris | Campylorhamphus trochilirostris |
| Red-billed Toucan | Ramphastos tucanus | Ramphastos tucanus |
| Red-billed Tyrannulet | Zimmerius cinereicapillus | Zimmerius cinereicapillus |
| Red-billed Woodcreeper | Hylexetastes perrotii | Hylexetastes perrotii |
| Red-breasted Blackbird | Sturnella militaris | Leistes militaris |
| Red-breasted Chat | Granatellus venustus | Granatellus venustus |
| Red-breasted Flycatcher | Ficedula parva | Ficedula parva |
| Red-breasted Goose | Branta ruficollis | Branta ruficollis |
| Red-breasted Merganser | Mergus serrator | Mergus serrator |
| Red-breasted Nuthatch | Sitta canadensis | Sitta canadensis |
| Red-breasted Sapsucker | Sphyrapicus ruber | Sphyrapicus ruber |
| Red-breasted Toucan | Ramphastos dicolorus | Ramphastos dicolorus |
| Red-browed Pardalote | Pardalotus rubricatus | Pardalotus rubricatus |
| Red-browed Treecreeper | Climacteris erythrops | Climacteris erythrops |
| Red-capped Cardinal | Paroaria gularis | Paroaria gularis |
| Red-capped Crombec | Sylvietta ruficapilla | Sylvietta ruficapilla |
| Red-capped Flowerpecker | Dicaeum geelvinkianum | Dicaeum geelvinkianum |
| Red-capped Lark | Calandrella cinerea | Calandrella cinerea |
| Red-capped Manakin | Pipra mentalis | Pipra mentalis |
| Red-capped Robin | Petroica goodenovii | Petroica goodenovii |
| Red-cheeked Parrot | Geoffroyus geoffroyi | Geoffroyus geoffroyi |
| Red-cheeked Wattle-eye | Platysteira blissetti | Platysteira blissetti |
| Red-chested Cuckoo | Cuculus solitarius | Cuculus solitarius |
| Red-chested Goshawk | Accipiter toussenelii | Accipiter toussenelii |
| Red-chested Owlet | Glaucidium tephronotum | Glaucidium tephronotum |
| Red-chested Sunbird | Nectarinia erythrocerca | Nectarinia erythrocerca |
| Red-chested Swallow | Hirundo lucida | Hirundo lucida |
| Red-chinned Lorikeet | Charmosyna rubrigularis | Charmosyna rubrigularis |
| Red-cockaded Woodpecker | Picoides borealis | Picoides borealis |
| Red-collared Woodpecker | Picus rabieri | Picus rabieri |
| Red-cowled Cardinal | Paroaria dominicana | Paroaria dominicana |
| Red-crested Bustard | Eupodotis ruficrista | Eupodotis ruficrista |
| Red-crested Cardinal | Paroaria coronata | Paroaria coronata |
| Red-crested Cotinga | Ampelion rubrocristata | Ampelion rubrocristata |
| Red-crested Finch | Coryphospingus cucullatus | Coryphospingus cucullatus |
| Red-crested Pochard | Netta rufina | Netta rufina |
| Red-crested Turaco | Tauraco erythrolophus | Tauraco erythrolophus |
| Red-crowned Ant-Tanager | Habia rubica | Habia rubica |
| Red-crowned Malimbe | Malimbus coronatus | Malimbus coronatus |
| Red-crowned Woodpecker | Melanerpes rubricapillus | Melanerpes rubricapillus |
| Red-eyed Bulbul | Pycnonotus nigricans | Pycnonotus brunneus |
| Red-eyed Dove | Streptopelia semitorquata | Streptopelia semitorquata |
| Red-eyed Puffback | Dryoscopus senegalensis | Dryoscopus senegalensis |
| Red-eyed Thornbird | Phacellodomus erythrophthalmus | Phacellodomus erythrophthalmus |
| Red-eyed Vireo | Vireo olivaceus | Vireo olivaceus |
| Red-faced Barbet | Lybius rubrifacies | Lybius rubrifacies |
| Red-faced Cisticola | Cisticola erythrops | Cisticola erythrops |
| Red-faced Cormorant | Phalacrocorax urile | Phalacrocorax urile |
| Red-faced Crimson-wing | Cryptospiza reichenovii | Cryptospiza reichenovii |
| Red-faced Crombec | Sylvietta whytii | Sylvietta whytii |
| Red-faced Guan | Penelope dabbenei | Penelope dabbenei |
| Red-faced Liocichla | Liocichla phoenicea | Liocichla phoenicea |
| Red-faced Mousebird | Urocolius indicus | Urocolius indicus |
| Red-faced Parrot | Hapalopsittaca pyrrhops | Hapalopsittaca pyrrhops |
| Red-faced Pytilia | Pytilia hypogrammica | Pytilia hypogrammica |
| Red-faced Spinetail | Certhiaxis erythrops | Cranioleuca erythrops |
| Red-flanked Lorikeet | Charmosyna placentis | Charmosyna placentis |
| Red-footed Booby | Sula sula | Sula sula |
| Red-fronted Barbet | Tricholaema diademata | Tricholaema diademata |
| Red-fronted Coot | Fulica rufifrons | Fulica rufifrons |
| Red-fronted Macaw | Ara rubrogenys | Ara rubrogenys |
| Red-fronted Parakeet | Cyanoramphus novaezelandiae | Cyanoramphus novaezelandiae |
| Red-fronted Parrot | Poicephalus gulielmi | Poicephalus gulielmi |
| Red-fronted Tinkerbird | Pogoniulus pusillus | Pogoniulus pusillus |
| Red-gartered Coot | Fulica armillata | Fulica armillata |
| Red-headed Barbet | Eubucco bourcierii | Eubucco bourcierii |
| Red-headed Bluebill | Spermophaga ruficapilla | Spermophaga ruficapilla |
| Red-headed Bullfinch | Pyrrhula erythrocephala | Pyrrhula erythrocephala |
| Red-headed Bunting | Emberiza bruniceps | Emberiza bruniceps |
| Red-headed Cisticola | Cisticola subruficapilla | Cisticola subruficapillus |
| Red-headed Finch | Pinicola subhimachalus | Amadina erythrocephala |
| Red-headed Malimbe | Malimbus rubricollis | Malimbus rubricollis |
| Red-headed Manakin | Pipra rubrocapilla | Pipra rubrocapilla |
| Red-headed Quelea | Quelea erythrops | Quelea erythrops |
| Red-headed Tanager | Piranga erythrocephala | Piranga erythrocephala |
| Red-headed Trogon | Harpactes erythrocephalus | Harpactes erythrocephalus |
| Red-headed Vulture | Aegypius calvus | Sarcogyps calvus |
| Red-headed Weaver | Anaplectes melanotis | Anaplectes rubriceps |
| Red-headed Woodpecker | Melanerpes erythrocephalus | Melanerpes erythrocephalus |
| Red-hooded Tanager | Piranga rubriceps | Piranga rubriceps |
| Red-kneed Dotterel | Charadrius cinctus | Erythrogonys cinctus |
| Red-knobbed Coot | Fulica cristata | Fulica cristata |
| Red-legged Cormorant | Phalacrocorax gaimardi | Phalacrocorax gaimardi |
| Red-legged Crake | Rallina fasciata | Rallina fasciata |
| Red-legged Honeycreeper | Cyanerpes cyaneus | Cyanerpes cyaneus |
| Red-legged Kittiwake | Rissa brevirostris | Rissa brevirostris |
| Red-legged Partridge | Alectoris rufa | Alectoris rufa |
| Red-legged Seriema | Cariama cristata | Cariama cristata |
| Red-legged Thrush | Turdus plumbeus | Turdus plumbeus |
| Red-lored Whistler | Pachycephala rufogularis | Pachycephala rufogularis |
| Red-mantled Rosefinch | Carpodacus rhodochlamys | Carpodacus rhodochlamys |
| Red-naped Sapsucker | Sphyrapicus nuchalis | Sphyrapicus nuchalis |
| Red-naped Trogon | Harpactes kasumba | Harpactes kasumba |
| Red-necked Aracari | Pteroglossus bitorquatus | Pteroglossus bitorquatus |
| Red-necked Avocet | Recurvirostra novaehollandiae | Recurvirostra novaehollandiae |
| Red-necked Crake | Rallina tricolor | Rallina tricolor |
| Red-necked Grebe | Podiceps grisegena | Podiceps grisegena |
| Red-necked Nightjar | Caprimulgus ruficollis | Caprimulgus ruficollis |
| Red-necked Phalarope | Phalaropus lobatus | Phalaropus lobatus |
| Red-necked Spurfowl | Francolinus afer | Francolinus afer |
| Red-necked Tanager | Tangara cyanocephala | Tangara cyanocephala |
| Red-necked Woodpecker | Campephilus rubricollis | Campephilus rubricollis |
| Red-pate Cisticola | Cisticola ruficeps | Cisticola ruficeps |
| Red-ruffed Fruitcrow | Pyroderus scutatus | Pyroderus scutatus |
| Red-rumped Bush-Tyrant | Myiotheretes erythropygius | Cnemarchus erythropygius |
| Red-rumped Cacique | Cacicus haemorrhous | Cacicus haemorrhous |
| Red-rumped Parrot | Psephotus haematonotus | Psephotus haematonotus |
| Red-rumped Swallow | Hirundo daurica | Hirundo daurica |
| Red-rumped Tinkerbird | Pogoniulus atroflavus | Pogoniulus atroflavus |
| Red-rumped Waxbill | Estrilda charmosyna | Estrilda charmosyna |
| Red-rumped Wheatear | Oenanthe moesta | Oenanthe moesta |
| Red-rumped Woodpecker | Veniliornis kirkii | Veniliornis kirkii |
| Red-shouldered Hawk | Buteo lineatus | Buteo lineatus |
| Red-shouldered Macaw | Ara nobilis | Ara nobilis |
| Red-shouldered Tanager | Tachyphonus phoenicius | Tachyphonus phoenicius |
| Red-stained Woodpecker | Veniliornis affinis | Veniliornis affinis |
| Red-tailed Bulbul | Criniger calurus | Criniger calurus |
| Red-tailed Comet | Sappho sparganura | Sappho sparganura |
| Red-tailed Hawk | Buteo jamaicensis | Buteo jamaicensis |
| Red-tailed Minla | Minla ignotincta | Minla ignotincta |
| Red-tailed Vanga | Calicalicus madagascariensis | Calicalicus madagascariensis |
| Red-throated Alethe | Alethe poliophrys | Alethe poliophrys |
| Red-throated Ant-Tanager | Habia fuscicauda | Habia fuscicauda |
| Red-throated Caracara | Daptrius americanus | Daptrius americanus |
| Red-throated Lorikeet | Charmosyna amabilis | Charmosyna amabilis |
| Red-throated Pipit | Anthus cervinus | Anthus cervinus |
| Red-throated Tit | Parus fringillinus | Parus fringillinus |
| Red-vented Barbet | Megalaima lagrandieri | Megalaima lagrandieri |
| Red-vented Bulbul | Pycnonotus cafer | Pycnonotus cafer |
| Red-vented Malimbe | Malimbus scutatus | Malimbus scutatus |
| Red-wattled Lapwing | Vanellus indicus | Vanellus indicus |
| Red-whiskered Bulbul | Pycnonotus jocosus | Pycnonotus jocosus |
| Red-winged Blackbird | Agelaius phoeniceus | Agelaius phoeniceus |
| Red-winged Francolin | Francolinus levaillantii | Francolinus levaillantii |
| Red-winged Grey Warbler | Drymocichla incana | Drymocichla incana |
| Red-winged Parrot | Aprosmictus erythropterus | Aprosmictus erythropterus |
| Red-winged Tinamou | Rhynchotus rufescens | Rhynchotus rufescens |
| Red-winged Warbler | Prinia erythroptera | Heliolais erythroptera |
| Reddish Egret | Egretta rufescens | Egretta rufescens |
| Reddish Hermit | Phaethornis ruber | Phaethornis ruber |
| Reddish-winged Bare-eye | Phlegopsis erythroptera | Phlegopsis erythroptera |
| Redhead | Aythya americana | Aythya americana |
| Redthroat | Pyrrholaemus brunneus | Pyrrholaemus brunneus |
| Redwing | Turdus iliacus | Turdus iliacus |
| Reed Bunting | Emberiza schoeniclus | Emberiza schoeniclus |
| Regal Sunbird | Nectarinia regia | Nectarinia regia |
| Regent Bowerbird | Sericulus chrysocephalus | Sericulus chrysocephalus |
| Regent Honeyeater | Xanthomyza phrygia | Xanthomyza phrygia |
| Regent Parrot | Polytelis anthopeplus | Polytelis anthopeplus |
| Reichenbach's Sunbird | Nectarinia reichenbachii | Nectarinia reichenbachii |
| Reiser's Tyrannulet | Phyllomyias reiseri | Phyllomyias reiseri |
| Relict Gull | Larus relictus | Larus relictus |
| Relict Raven | Corvus boreus | Corvus boreus |
| Rennell Fantail | Rhipidura rennelliana | Rhipidura rennelliana |
| Rennell Shrikebill | Clytorhynchus hamlini | Clytorhynchus hamlini |
| Resplendent Quetzal | Pharomachrus mocinno | Pharomachrus mocinno |
| Restless Flycatcher | Myiagra inquieta | Myiagra inquieta |
| Rhinoceros Auklet | Cerorhinca monocerata | Cerorhinca monocerata |
| Rhinoceros Hornbill | Buceros rhinoceros | Buceros rhinoceros |
| Richard's Pipit | Anthus richardi | Anthus richardi |
| Ridgway's Hawk | Buteo ridgwayi | Buteo ridgwayi |
| Rifleman | Acanthisitta chloris | Acanthisitta chloris |
| Ring-billed Gull | Larus delawarensis | Larus delawarensis |
| Ring-necked Dove | Streptopelia capicola | Streptopelia capicola |
| Ring-necked Duck | Aythya collaris | Aythya collaris |
| Ring-necked Francolin | Francolinus streptophorus | Francolinus streptophorus |
| Ringed Antpipit | Corythopis torquata | Corythopis torquata |
| Ringed Kingfisher | Megaceryle torquata | Megaceryle torquata |
| Ringed Teal | Callonetta leucophrys | Callonetta leucophrys |
| Ringed Woodpecker | Celeus torquatus | Celeus torquatus |
| Rio Branco Antbird | Cercomacra carbonaria | Cercomacra carbonaria |
| Rio Suno Antwren | Myrmotherula sunensis | Myrmotherula sunensis |
| Rio de Janeiro Antbird | Cercomacra brasiliana | Cercomacra brasiliana |
| Rio de Janeiro Antwren | Myrmotherula fluminensis | Myrmotherula fluminensis |
| River Lapwing | Vanellus duvaucelii | Vanellus duvaucelii |
| River Tyrannulet | Serpophaga hypoleuca | Serpophaga hypoleuca |
| Riverside Tyrant | Knipolegus orenocensis | Knipolegus orenocensis |
| Riverside Wren | Thryothorus semibadius | Thryothorus semibadius |
| Roadside Hawk | Buteo magnirostris | Buteo magnirostris |
| Robin Accentor | Prunella rubeculoides | Prunella rubeculoides |
| Robust Woodpecker | Campephilus robustus | Campephilus robustus |
| Rock Bunting | Emberiza cia | Emberiza cia |
| Rock Earthcreeper | Upucerthia andaecola | Upucerthia andaecola |
| Rock Parrot | Neophema petrophila | Neophema petrophila |
| Rock Partridge | Alectoris graeca | Alectoris graeca |
| Rock Pipit | Anthus petrosus | Anthus petrosus |
| Rock Ptarmigan | Lagopus mutus | Lagopus mutus |
| Rock Sandpiper | Calidris ptilocnemis | Calidris ptilocnemis |
| Rockefeller's Sunbird | Nectarinia rockefelleri | Nectarinia rockefelleri |
| Rockhopper Penguin | Eudyptes chrysocome | Eudyptes chrysocome |
| Rondonia Bushbird | Clytoctantes atrogularis | Clytoctantes atrogularis |
| Rook | Corvus frugilegus | Corvus frugilegus |
| Roraiman Antwren | Herpsilochmus roraimae | Herpsilochmus roraimae |
| Roraiman Flycatcher | Myiophobus roraimae | Myiophobus roraimae |
| Roraiman Nightjar | Caprimulgus whitelyi | Caprimulgus whitelyi |
| Rose Robin | Petroica rosea | Petroica rosea |
| Rose-bellied Bunting | Passerina rositae | Passerina rositae |
| Rose-breasted Chat | Granatellus pelzelni | Granatellus pelzelni |
| Rose-breasted Grosbeak | Pheucticus ludovicianus | Pheucticus ludovicianus |
| Rose-faced Parrot | Pionopsitta pulchra | Pionopsitta pulchra |
| Rose-ringed Parakeet | Psittacula krameri | Psittacula krameri |
| Rose-throated Becard | Pachyramphus aglaiae | Pachyramphus aglaiae |
| Rose-throated Tanager | Piranga roseogularis | Piranga roseogularis |
| Roseate Spoonbill | Ajaia ajaja | Ajaia ajaja |
| Roseate Tern | Sterna dougallii | Sterna dougallii |
| Ross's Goose | Anser rossi | Anser rossii |
| Ross's Gull | Rhodostethia rosea | Rhodostethia rosea |
| Rosy Minivet | Pericrocotus roseus | Pericrocotus roseus |
| Rouget's Rail | Rougetius rougetii | Rougetius rougetii |
| Rough-legged Tyrannulet | Phyllomyias burmeisteri | Phyllomyias burmeisteri |
| Round-tailed Manakin | Pipra chloromeros | Pipra chloromeros |
| Roviana Rail | Rallus rovianae | Gallirallus rovianae |
| Royal Albatross | Diomedea epomophora | Diomedea epomophora |
| Royal Flycatcher | Onychorhynchus coronatus | Onychorhynchus coronatus |
| Royal Penguin | Eudyptes schlegeli | Eudyptes schlegeli |
| Royal Spoonbill | Platalea regia | Platalea regia |
| Royal Sunangel | Heliangelus regalis | Heliangelus regalis |
| Royal Tern | Thalasseus maximus | Sterna maxima |
| Ruby-cheeked Sunbird | Anthreptes singalensis | Anthreptes singalensis |
| Ruby-crowned Kinglet | Regulus calendula | Regulus calendula |
| Ruby-crowned Tanager | Tachyphonus coronatus | Tachyphonus coronatus |
| Ruby-throated Hummingbird | Archilochus colubris | Archilochus colubris |
| Ruby-topaz Hummingbird | Chrysolampis mosquitus | Chrysolampis mosquitus |
| Rudd's Apalis | Apalis ruddi | Apalis ruddi |
| Rudd's Lark | Heteromirafra ruddi | Heteromirafra ruddi |
| Ruddy Crake | Laterallus ruber | Laterallus ruber |
| Ruddy Duck | Oxyura jamaicensis | Oxyura jamaicensis |
| Ruddy Foliage-gleaner | Automolus rubiginosus | Automolus rubiginosus |
| Ruddy Kingfisher | Halcyon coromanda | Halcyon coromanda |
| Ruddy Pigeon | Columba subvinacea | Columba subvinacea |
| Ruddy Shelduck | Tadorna ferruginea | Tadorna ferruginea |
| Ruddy Spinetail | Synallaxis rutilans | Synallaxis rutilans |
| Ruddy Treerunner | Margarornis rubiginosus | Margarornis rubiginosus |
| Ruddy Turnstone | Arenaria interpres | Arenaria interpres |
| Ruddy Woodcreeper | Dendrocincla homochroa | Dendrocincla homochroa |
| Ruddy-breasted Crake | Porzana fusca | Porzana fusca |
| Ruddy-breasted Seedeater | Sporophila minuta | Sporophila minuta |
| Ruddy-headed Goose | Chloephaga rubidiceps | Chloephaga rubidiceps |
| Ruddy-tailed Flycatcher | Terenotriccus erythrurus | Myiobius erythrurus |
| Ruff | Philomachus pugnax | Philomachus pugnax |
| Ruffed Grouse | Bonasa umbellus | Bonasa umbellus |
| Rufous Antpitta | Grallaria rufula | Grallaria rufula |
| Rufous Babbler | Turdoides subrufus | Turdoides subrufus |
| Rufous Bristlebird | Dasyornis broadbenti | Dasyornis broadbenti |
| Rufous Cacholote | Pseudoseisura cristata | Pseudoseisura cristata |
| Rufous Casiornis | Casiornis rufa | Casiornis rufa |
| Rufous Chatterer | Turdoides rubiginosus | Turdoides rubiginosus |
| Rufous Cisticola | Cisticola rufa | Cisticola rufus |
| Rufous Coucal | Centropus unirufus | Centropus unirufus |
| Rufous Fantail | Rhipidura rufifrons | Rhipidura rufifrons |
| Rufous Flycatcher | Myiarchus semirufus | Myiarchus semirufus |
| Rufous Gnateater | Conopophaga lineata | Conopophaga lineata |
| Rufous Hornbill | Buceros hydrocorax | Buceros hydrocorax |
| Rufous Hornero | Furnarius rufus | Furnarius rufus |
| Rufous Hummingbird | Selasphorus rufus | Selasphorus rufus |
| Rufous Monarch | Monarcha rubiensis | Monarcha rubiensis |
| Rufous Motmot | Baryphthengus martii | Baryphthengus martii |
| Rufous Mourner | Rhytipterna holerythra | Rhytipterna holerythra |
| Rufous Piculet | Sasia abnormis | Sasia abnormis |
| Rufous Piha | Lipaugus unirufus | Lipaugus unirufus |
| Rufous Potoo | Nyctibius bracteatus | Nyctibius bracteatus |
| Rufous Sabrewing | Campylopterus rufus | Campylopterus rufus |
| Rufous Songlark | Cincloramphus mathewsi | Cincloramphus mathewsi |
| Rufous Spinetail | Synallaxis unirufa | Synallaxis unirufa |
| Rufous Treecreeper | Climacteris rufa | Climacteris rufa |
| Rufous Vanga | Schetba rufa | Schetba rufa |
| Rufous Whistler | Pachycephala rufiventris | Pachycephala rufiventris |
| Rufous Woodcock | Scolopax saturata | Scolopax saturata |
| Rufous Woodpecker | Celeus brachyurus | Celeus brachyurus |
| Rufous Wren | Cinnycerthia unirufa | Cinnycerthia unirufa |
| Rufous-backed Antvireo | Dysithamnus xanthopterus | Dysithamnus xanthopterus |
| Rufous-banded Honeyeater | Conopophila albogularis | Conopophila albogularis |
| Rufous-banded Miner | Geositta rufipennis | Geositta rufipennis |
| Rufous-banded Owl | Strix albitarsus | Strix albitarsus |
| Rufous-bellied Antwren | Myrmotherula guttata | Myrmotherula guttata |
| Rufous-bellied Bush-Tyrant | Myiotheretes fuscorufus | Myiotheretes fuscorufus |
| Rufous-bellied Chachalaca | Ortalis wagleri | Ortalis wagleri |
| Rufous-bellied Euphonia | Euphonia rufiventris | Euphonia rufiventris |
| Rufous-bellied Heron | Ardeola rufiventris | Ardeola rufiventris |
| Rufous-bellied Nighthawk | Lurocalis rufiventris | Lurocalis rufiventris |
| Rufous-bellied Niltava | Niltava sundara | Niltava sundara |
| Rufous-bellied Saltator | Saltator rufiventris | Saltator rufiventris |
| Rufous-bellied Thrush | Turdus rufiventris | Turdus rufiventris |
| Rufous-bellied Tit | Parus rufiventris | Parus rufiventris |
| Rufous-bellied Woodpecker | Picoides hyperythrus | Dendrocopos hyperythrus |
| Rufous-breasted Accentor | Prunella strophiata | Prunella strophiata |
| Rufous-breasted Hermit | Glaucis hirsuta | Glaucis hirsuta |
| Rufous-breasted Piculet | Picumnus rufiventris | Picumnus rufiventris |
| Rufous-breasted Sabrewing | Campylopterus hyperythrus | Campylopterus hyperythrus |
| Rufous-breasted Spinetail | Synallaxis erythrothorax | Synallaxis erythrothorax |
| Rufous-breasted Wren | Thryothorus rutilus | Thryothorus rutilus |
| Rufous-browed Conebill | Conirostrum rufum | Conirostrum rufum |
| Rufous-browed Flycatcher | Ficedula solitaris | Ficedula solitaris |
| Rufous-browed Hemispingus | Hemispingus rufosuperciliaris | Hemispingus rufosuperciliaris |
| Rufous-browed Tyrannulet | Phylloscartes superciliaris | Phylloscartes superciliaris |
| Rufous-brown Solitaire | Myadestes leucogenys | Cichlopsis leucogenys |
| Rufous-capped Antshrike | Thamnophilus ruficapillus | Thamnophilus ruficapillus |
| Rufous-capped Motmot | Baryphthengus ruficapillus | Baryphthengus ruficapillus |
| Rufous-capped Spinetail | Synallaxis ruficapilla | Synallaxis ruficapilla |
| Rufous-capped Thornbill | Chalcostigma ruficeps | Chalcostigma ruficeps |
| Rufous-capped Warbler | Basileuterus rufifrons | Basileuterus rufifrons |
| Rufous-cheeked Nightjar | Caprimulgus rufigena | Caprimulgus rufigena |
| Rufous-cheeked Tanager | Tangara rufigenis | Tangara rufigenis |
| Rufous-chested Tanager | Thlypopsis ornata | Thlypopsis ornata |
| Rufous-collared Robin | Turdus rufitorques | Turdus rufitorques |
| Rufous-collared Sparrow | Zonotrichia capensis | Zonotrichia capensis |
| Rufous-crested Coquette | Lophornis delattrei | Lophornis delattrei |
| Rufous-crested Tanager | Creurgops verticalis | Creurgops verticalis |
| Rufous-crowned Antpitta | Pittasoma rufopileatum | Pittasoma rufopileatum |
| Rufous-crowned Elaenia | Elaenia ruficeps | Elaenia ruficeps |
| Rufous-crowned Greenlet | Hylophilus poicilotis | Hylophilus poicilotis |
| Rufous-crowned Roller | Coracias naevia | Coracias naevia |
| Rufous-crowned Sparrow | Aimophila ruficeps | Aimophila ruficeps |
| Rufous-faced Antpitta | Grallaria erythrotis | Grallaria erythrotis |
| Rufous-faced Crake | Laterallus xenopterus | Laterallus xenopterus |
| Rufous-fronted Parakeet | Bolborhynchus ferrugineifrons | Bolborhynchus ferrugineifrons |
| Rufous-fronted Prinia | Prinia buchanani | Prinia buchanani |
| Rufous-fronted Thornbird | Phacellodomus rufifrons | Phacellodomus rufifrons |
| Rufous-headed Chachalaca | Ortalis erythroptera | Ortalis erythroptera |
| Rufous-headed Robin | Erithacus ruficeps | Luscinia ruficeps |
| Rufous-headed Tanager | Hemithraupis ruficapilla | Hemithraupis ruficapilla |
| Rufous-headed Woodpecker | Celeus spectabilis | Celeus spectabilis |
| Rufous-legged Owl | Strix rufipes | Strix rufipes |
| Rufous-naped Greenlet | Hylophilus semibrunneus | Hylophilus semibrunneus |
| Rufous-naped Lark | Mirafra africana | Mirafra africana |
| Rufous-naped Whistler | Aleadryas rufinucha | Aleadryas rufinucha |
| Rufous-naped Wren | Campylorhynchus rufinucha | Campylorhynchus rufinucha |
| Rufous-necked Foliage-gleaner | Automolus ruficollis | Syndactyla ruficollis |
| Rufous-necked Hornbill | Aceros nipalensis | Aceros nipalensis |
| Rufous-necked Puffbird | Malacoptila rufa | Malacoptila rufa |
| Rufous-necked Stint | Calidris ruficollis | Calidris ruficollis |
| Rufous-necked Wryneck | Jynx ruficollis | Jynx ruficollis |
| Rufous-rumped Antwren | Terenura callinota | Terenura callinota |
| Rufous-rumped Foliage-gleaner | Philydor erythrocercus | Philydor erythrocercus |
| Rufous-rumped Lark | Pinarocorys erythropygia | Pinarocorys erythropygia |
| Rufous-shafted Woodstar | Chaetocercus jourdanii | Chaetocercus jourdanii |
| Rufous-sided Broadbill | Smithornis rufolateralis | Smithornis rufolateralis |
| Rufous-sided Crake | Laterallus melanophaius | Laterallus melanophaius |
| Rufous-sided Towhee | Pipilo erythrophthalmus | Pipilo erythrophthalmus |
| Rufous-tailed Antbird | Drymophila genei | Drymophila genei |
| Rufous-tailed Antwren | Myrmotherula erythrura | Myrmotherula erythrura |
| Rufous-tailed Attila | Attila phoenicurus | Attila phoenicurus |
| Rufous-tailed Flatbill | Ramphotrigon ruficauda | Ramphotrigon ruficauda |
| Rufous-tailed Foliage-gleaner | Philydor ruficaudatus | Philydor ruficaudatus |
| Rufous-tailed Hawk | Buteo ventralis | Buteo ventralis |
| Rufous-tailed Hummingbird | Amazilia tzacatl | Amazilia tzacatl |
| Rufous-tailed Jacamar | Galbula ruficauda | Galbula ruficauda |
| Rufous-tailed Tyrant | Knipolegus poecilurus | Knipolegus poecilurus |
| Rufous-tailed Weaver | Histurgops ruficauda | Histurgops ruficauda |
| Rufous-tailed Xenops | Xenops milleri | Xenops milleri |
| Rufous-thighed Kite | Harpagus diodon | Harpagus diodon |
| Rufous-throated Dipper | Cinclus schulzi | Cinclus schulzi |
| Rufous-throated Fulvetta | Alcippe rufogularis | Alcippe rufogularis |
| Rufous-throated Sapphire | Hylocharis sapphirina | Hylocharis sapphirina |
| Rufous-throated Solitaire | Myadestes genibarbis | Myadestes genibarbis |
| Rufous-throated Tanager | Tangara rufigula | Tangara rufigula |
| Rufous-throated White-eye | Madanga ruficollis | Madanga ruficollis |
| Rufous-vented Chachalaca | Ortalis ruficauda | Ortalis ruficauda |
| Rufous-vented Tapaculo | Scytalopus femoralis | Scytalopus femoralis |
| Rufous-vented Whitetip | Urosticte ruficrissa | Urosticte ruficrissa |
| Rufous-vented Yuhina | Yuhina occipitalis | Yuhina occipitalis |
| Rufous-webbed Brilliant | Heliodoxa branickii | Heliodoxa branickii |
| Rufous-webbed Bush-Tyrant | Polioxolmis rufipennis | Polioxolmis rufipennis |
| Rufous-winged Antshrike | Thamnophilus torquatus | Thamnophilus torquatus |
| Rufous-winged Antwren | Herpsilochmus rufimarginatus | Herpsilochmus rufimarginatus |
| Rufous-winged Buzzard | Butastur liventer | Butastur liventer |
| Rufous-winged Sparrow | Aimophila carpalis | Aimophila carpalis |
| Rufous-winged Sunbird | Nectarinia rufipennis | Nectarinia rufipennis |
| Rufous-winged Tanager | Tangara lavinia | Tangara lavinia |
| Rufous-winged Tyrannulet | Mecocerculus calopterus | Mecocerculus calopterus |
| Russet Antshrike | Thamnistes anabatinus | Thamnistes anabatinus |
| Russet-backed Oropendola | Psarocolius angustifrons | Psarocolius angustifrons |
| Russet-bellied Spinetail | Synallaxis zimmeri | Synallaxis zimmeri |
| Russet-crowned Crake | Laterallus viridis | Anurolimnas viridis |
| Russet-crowned Motmot | Momotus mexicanus | Momotus mexicanus |
| Russet-crowned Warbler | Basileuterus coronatus | Basileuterus coronatus |
| Russet-mantled Foliage-gleaner | Philydor dimidiatus | Philydor dimidiatus |
| Russet-mantled Softtail | Phacellodomus berlepschi | Thripophaga berlepschi |
| Russet-throated Puffbird | Hypnelus ruficollis | Hypnelus ruficollis |
| Russet-winged Spadebill | Platyrinchus leucoryphus | Platyrinchus leucoryphus |
| Rustic Bunting | Emberiza rustica | Emberiza rustica |
| Rusty Blackbird | Euphagus carolinus | Euphagus carolinus |
| Rusty Pitohui | Pitohui ferrugineus | Pitohui ferrugineus |
| Rusty Sparrow | Aimophila rufescens | Aimophila rufescens |
| Rusty Tinamou | Crypturellus brevirostris | Crypturellus brevirostris |
| Rusty-backed Antwren | Formicivora rufa | Formicivora rufa |
| Rusty-backed Monjita | Xolmis rubetra | Xolmis rubetra |
| Rusty-backed Spinetail | Certhiaxis vulpina | Cranioleuca vulpina |
| Rusty-barred Owl | Strix hylophila | Strix hylophila |
| Rusty-bellied Shortwing | Brachypteryx hyperythra | Brachypteryx hyperythra |
| Rusty-belted Tapaculo | Liosceles thoracicus | Liosceles thoracicus |
| Rusty-breasted Antpitta | Grallaricula ferrugineipectus | Grallaricula ferrugineipectus |
| Rusty-breasted Nunlet | Nonnula rubecula | Nonnula rubecula |
| Rusty-collared Seedeater | Sporophila collaris | Sporophila collaris |
| Rusty-crowned Tit-Spinetail | Leptasthenura pileata | Leptasthenura pileata |
| Rusty-faced Parrot | Hapalopsittaca amazonina | Hapalopsittaca amazonina |
| Rusty-flanked Crake | Laterallus levraudi | Laterallus levraudi |
| Rusty-fronted Barwing | Actinodura egertoni | Actinodura egertoni |
| Rusty-fronted Canastero | Thripophaga ottonis | Asthenes ottonis |
| Rusty-margined Flycatcher | Myiozetetes cayanensis | Myiozetetes cayanensis |
| Rusty-margined Guan | Penelope superciliaris | Penelope superciliaris |
| Rusty-necked Piculet | Picumnus fuscus | Picumnus fuscus |
| Rusty-winged Barbtail | Margarornis guttuligera | Premnornis guttuligera |
| Ruwenzori Nightjar | Caprimulgus ruwenzorii | Caprimulgus ruwenzorii |
| Ruwenzori Turaco | Musophaga johnstoni | Musophaga johnstoni |
| Sabine's Gull | Xema sabini | Xema sabini |
| Sabota Lark | Mirafra sabota | Mirafra sabota |
| Sacred Ibis | Threskiornis aethiopicus | Threskiornis aethiopicus |
| Sacred Kingfisher | Halcyon sancta | Todirhamphus sanctus |
| Sad Flycatcher | Myiarchus barbirostris | Myiarchus barbirostris |
| Saddleback | Creadion carunculatus | Philesturnus carunculatus |
| Saffron Finch | Sicalis flaveola | Sicalis flaveola |
| Saffron Siskin | Carduelis siemiradzkii | Carduelis siemiradzkii |
| Saffron Toucanet | Baillonius bailloni | Baillonius bailloni |
| Saffron-billed Sparrow | Arremon flavirostris | Arremon flavirostris |
| Saffron-breasted Redstart | Myioborus cardonai | Myioborus cardonai |
| Saffron-cowled Blackbird | Xanthopsar flavus | Agelaius flavus |
| Saffron-crowned Tanager | Tangara xanthocephala | Tangara xanthocephala |
| Saffron-headed Parrot | Pionopsitta pyrilia | Pionopsitta pyrilia |
| Sage Grouse | Centrocercus urophasianus | Centrocercus urophasianus |
| Sage Sparrow | Amphispiza belli | Amphispiza belli |
| Sage Thrasher | Oreoscoptes montanus | Oreoscoptes montanus |
| Saker Falcon | Falco cherrug | Falco cherrug |
| Salinas Monjita | Xolmis salinarum | Xolmis salinarum |
| Salmon-crested Cockatoo | Cacatua moluccensis | Cacatua moluccensis |
| Salvadori's Antwren | Myrmotherula minor | Myrmotherula minor |
| Salvadori's Nightjar | Caprimulgus pulchellus | Caprimulgus pulchellus |
| Salvadori's Pheasant | Lophura inornata | Lophura inornata |
| Salvadori's Weaver | Ploceus dicrocephalus | Ploceus dicrocephalus |
| Salvin's Curassow | Crax salvini | Mitu salvini |
| Samoan Fantail | Rhipidura nebulosa | Rhipidura nebulosa |
| Samoan Starling | Aplonis atrifusca | Aplonis atrifusca |
| Samoan Triller | Lalage sharpei | Lalage sharpei |
| San Blas Jay | Cissilopha sanblasiana | Cyanocorax sanblasianus |
| San Cristobal Starling | Aplonis dichroa | Aplonis dichroa |
| Sand Martin | Riparia riparia | Riparia riparia |
| Sand Partridge | Ammoperdix heyi | Ammoperdix heyi |
| Sanderling | Calidris alba | Calidris alba |
| Sandhill Crane | Grus canadensis | Grus canadensis |
| Sandwich Tern | Thalasseus sandvicensis | Sterna sandvicensis |
| Sandy Gallito | Teledromas fuscus | Teledromas fuscus |
| Sanford's White-eye | Woodfordia lacertosa | Woodfordia lacertosa |
| Santa Cruz White-eye | Zosterops sanctaecrucis | Zosterops sanctaecrucis |
| Santa Marta Antpitta | Grallaria bangsi | Grallaria bangsi |
| Santa Marta Bush-Tyrant | Myiotheretes pernix | Myiotheretes pernix |
| Santa Marta Sabrewing | Campylopterus phainopeplus | Campylopterus phainopeplus |
| Santa Marta Warbler | Basileuterus basilicus | Basileuterus basilicus |
| Sao Paulo Tyrannulet | Phylloscartes paulistus | Phylloscartes paulistus |
| Sapphire-bellied Hummingbird | Lepidopyga lilliae | Lepidopyga lilliae |
| Sapphire-rumped Parrotlet | Touit purpurata | Touit purpurata |
| Sapphire-spangled Emerald | Amazilia lactea | Amazilia lactea |
| Sapphire-throated Hummingbird | Lepidopyga coeruleogularis | Lepidopyga coeruleogularis |
| Sapphire-vented Puffleg | Eriocnemis luciani | Eriocnemis luciani |
| Sardinian Warbler | Sylvia melanocephala | Sylvia melanocephala |
| Sarus Crane | Grus antigone | Grus antigone |
| Satin Bowerbird | Ptilonorhynchus violaceus | Ptilonorhynchus violaceus |
| Satin Flycatcher | Myiagra cyanoleuca | Myiagra cyanoleuca |
| Saturnine Antshrike | Thamnomanes ardesiacus | Thamnomanes ardesiacus |
| Satyr Tragopan | Tragopan satyra | Tragopan satyra |
| Saunders's Gull | Larus saundersi | Larus saundersi |
| Savannah Sparrow | Passerculus sandwichensis | Passerculus sandwichensis |
| Savi's Warbler | Locustella luscinioides | Locustella luscinioides |
| Savile's Bustard | Eupodotis savilei | Eupodotis savilei |
| Saw-billed Hermit | Ramphodon naevius | Ramphodon naevius |
| Saw-whet Owl | Aegolius acadicus | Aegolius acadicus |
| Saxaul Sparrow | Passer ammodendri | Passer ammodendri |
| Say's Phoebe | Sayornis saya | Sayornis saya |
| Sayaca Tanager | Thraupis sayaca | Thraupis sayaca |
| Scale-backed Antbird | Hylophylax poecilonota | Hylophylax poecilonota |
| Scale-throated Earthcreeper | Upucerthia dumetaria | Upucerthia dumetaria |
| Scale-throated Hermit | Phaethornis eurynome | Phaethornis eurynome |
| Scaled Antbird | Drymophila squamata | Drymophila squamata |
| Scaled Antpitta | Grallaria guatimalensis | Grallaria guatimalensis |
| Scaled Fruiteater | Ampelioides tschudii | Ampelioides tschudii |
| Scaled Metaltail | Metallura aeneocauda | Metallura aeneocauda |
| Scaled Piculet | Picumnus squamulatus | Picumnus squamulatus |
| Scaled Pigeon | Columba speciosa | Columba speciosa |
| Scaled Quail | Callipepla squamata | Callipepla squamata |
| Scaled Spinetail | Certhiaxis muelleri | Cranioleuca muelleri |
| Scaled Woodcreeper | Lepidocolaptes squamatus | Lepidocolaptes squamatus |
| Scallop-breasted Antpitta | Grallaricula loricata | Grallaricula loricata |
| Scalloped Antbird | Myrmeciza ruficauda | Myrmeciza ruficauda |
| Scaly Babbler | Turdoides squamulatus | Turdoides squamulatus |
| Scaly Chatterer | Turdoides aylmeri | Turdoides aylmeri |
| Scaly Francolin | Francolinus squamatus | Francolinus squamatus |
| Scaly Weaver | Sporopipes squamifrons | Sporopipes squamifrons |
| Scaly-bellied Woodpecker | Picus squamatus | Picus squamatus |
| Scaly-breasted Bulbul | Pycnonotus squamatus | Pycnonotus squamatus |
| Scaly-breasted Hummingbird | Phaeochroa cuvierii | Phaeochroa cuvierii |
| Scaly-breasted Lorikeet | Trichoglossus chlorolepidotus | Trichoglossus chlorolepidotus |
| Scaly-breasted Thrasher | Margarops fusca | Margarops fuscus |
| Scaly-crowned Babbler | Malacopteron cinereum | Malacopteron cinereum |
| Scaly-headed Parrot | Pionus maximiliani | Pionus maximiliani |
| Scaly-throated Foliage-gleaner | Philydor variegaticeps | Anabacerthia variegaticeps |
| Scaly-throated Honeyguide | Indicator variegatus | Indicator variegatus |
| Scarce Swift | Schoutedenapus myoptilus | Schoutedenapus myoptilus |
| Scarlet Finch | Haematospiza sipahi | Haematospiza sipahi |
| Scarlet Ibis | Eudocimus ruber | Eudocimus ruber |
| Scarlet Macaw | Ara macao | Ara macao |
| Scarlet Minivet | Pericrocotus flammeus | Pericrocotus flammeus |
| Scarlet Robin | Petroica multicolor | Petroica multicolor |
| Scarlet Sunbird | Aethopyga mystacalis | Aethopyga mystacalis |
| Scarlet Tanager | Piranga olivacea | Piranga olivacea |
| Scarlet-backed Flowerpecker | Dicaeum cruentatum | Dicaeum cruentatum |
| Scarlet-backed Woodpecker | Veniliornis callonotus | Veniliornis callonotus |
| Scarlet-breasted Dacnis | Dacnis berlepschi | Dacnis berlepschi |
| Scarlet-breasted Flowerpecker | Prionochilus thoracicus | Prionochilus thoracicus |
| Scarlet-breasted Fruiteater | Pipreola frontalis | Pipreola frontalis |
| Scarlet-browed Tanager | Heterospingus xanthopygius | Heterospingus xanthopygius |
| Scarlet-chested Parrot | Neophema splendida | Neophema splendida |
| Scarlet-chested Sunbird | Nectarinia senegalensis | Nectarinia senegalensis |
| Scarlet-crowned Barbet | Capito aurovirens | Capito aurovirens |
| Scarlet-headed Blackbird | Amblyramphus holosericeus | Amblyramphus holosericeus |
| Scarlet-headed Flowerpecker | Dicaeum trochileum | Dicaeum trochileum |
| Scarlet-hooded Barbet | Eubucco tucinkae | Eubucco tucinkae |
| Scarlet-horned Manakin | Pipra cornuta | Pipra cornuta |
| Scarlet-rumped Cacique | Cacicus uropygialis | Cacicus uropygialis |
| Scarlet-rumped Tanager | Ramphocelus passerinii | Ramphocelus passerinii |
| Scarlet-rumped Trogon | Harpactes duvaucelii | Harpactes duvaucelii |
| Scarlet-shouldered Parrotlet | Touit huetii | Touit huetii |
| Scarlet-thighed Dacnis | Dacnis venusta | Dacnis venusta |
| Scarlet-throated Tanager | Compsothraupis loricata | Compsothraupis loricata |
| Scarlet-tufted Sunbird | Anthreptes fraseri | Anthreptes fraseri |
| Schlegel's Asity | Philepitta schlegeli | Philepitta schlegeli |
| Schlegel's Francolin | Francolinus schlegelii | Francolinus schlegelii |
| Schneider's Pitta | Pitta schneideri | Pitta schneideri |
| Schouteden's Swift | Schoutedenapus schoutedeni | Schoutedenapus schoutedeni |
| Schrenck's Bittern | Ixobrychus eurhythmus | Ixobrychus eurhythmus |
| Scimitar-winged Piha | Chirocylla uropygialis | Lipaugus uropygialis |
| Scintillant Hummingbird | Selasphorus scintilla | Selasphorus scintilla |
| Scissor-tailed Flycatcher | Tyrannus forficatus | Tyrannus forficatus |
| Scissor-tailed Hummingbird | Hylonympha macrocerca | Hylonympha macrocerca |
| Scissor-tailed Kite | Chelictinia riocourii | Chelictinia riocourii |
| Scissor-tailed Nightjar | Hydropsalis brasiliana | Hydropsalis brasiliana |
| Sclater's Antwren | Myrmotherula sclateri | Myrmotherula sclateri |
| Sclater's Lark | Spizocorys sclateri | Spizocorys sclateri |
| Sclater's Tyrannulet | Phyllomyias sclateri | Phyllomyias sclateri |
| Sclater's Whistler | Pachycephala soror | Pachycephala soror |
| Scott's Oriole | Icterus parisorum | Icterus parisorum |
| Scottish Crossbill | Loxia scotica | Loxia scotica |
| Screaming Cowbird | Molothrus rufoaxillaris | Molothrus rufoaxillaris |
| Screaming Piha | Lipaugus vociferans | Lipaugus vociferans |
| Scribble-tailed Canastero | Thripophaga maculicauda | Asthenes maculicauda |
| Scrub Blackbird | Dives warszewiczi | Dives warszewiczi |
| Scrub Euphonia | Euphonia affinis | Euphonia affinis |
| Scrub Greenlet | Hylophilus flavipes | Hylophilus flavipes |
| Scrub Jay | Aphelocoma coerulescens | Aphelocoma californica |
| Scrub Tanager | Tangara vitriolina | Tangara vitriolina |
| Seaside Cinclodes | Cinclodes nigrofumosus | Cinclodes nigrofumosus |
| Seaside Sparrow | Ammodramus maritimus | Ammodramus maritimus |
| Sedge Warbler | Acrocephalus schoenobaenus | Acrocephalus schoenobaenus |
| Sedge Wren | Cistothorus platensis | Cistothorus platensis |
| Selva Cacique | Cacicus koepckeae | Cacicus koepckeae |
| Semicollared Puffbird | Malacoptila semicincta | Malacoptila semicincta |
| Semipalmated Sandpiper | Calidris pusilla | Calidris pusilla |
| Semper's Warbler | Leucopeza semperi | Leucopeza semperi |
| Senegal Coucal | Centropus senegalensis | Centropus senegalensis |
| Senegal Parrot | Poicephalus senegalus | Poicephalus senegalus |
| Sepia-brown Wren | Cinnycerthia peruana | Cinnycerthia peruana |
| Serra Antwren | Formicivora serrana | Formicivora serrana |
| Seychelles Fody | Foudia sechellarum | Foudia sechellarum |
| Seychelles Kestrel | Falco araea | Falco araea |
| Seychelles Sunbird | Nectarinia dussumieri | Nectarinia dussumieri |
| Shade Warbler | Cettia parens | Cettia parens |
| Sharp-billed Treehunter | Xenops contaminatus | Heliobletus contaminatus |
| Sharp-shinned Hawk | Accipiter striatus | Accipiter striatus |
| Sharp-tailed Grouse | Tympanuchus phasianellus | Tympanuchus phasianellus |
| Sharp-tailed Ibis | Cercibis oxycerca | Cercibis oxycerca |
| Sharp-tailed Sandpiper | Calidris acuminata | Calidris acuminata |
| Sharp-tailed Sparrow | Ammodramus caudacutus | Ammodramus caudacutus |
| Sharp-tailed Streamcreeper | Lochmias nematura | Lochmias nematura |
| Sharpbill | Oxyruncus cristatus | Oxyruncus cristatus |
| Sharpe's Apalis | Apalis sharpii | Apalis sharpii |
| Sharpe's Starling | Cinnyricinclus sharpii | Cinnyricinclus sharpii |
| Shear-tailed Grey Tyrant | Muscipipra vetula | Muscipipra vetula |
| Shelley's Crimson-wing | Cryptospiza shelleyi | Cryptospiza shelleyi |
| Shelley's Francolin | Francolinus shelleyi | Francolinus shelleyi |
| Shelley's Greenbul | Pycnonotus masukuensis | Andropadus masukuensis |
| Shelley's Starling | Spreo shelleyi | Lamprotornis shelleyi |
| Shikra | Accipiter badius | Accipiter badius |
| Shining Drongo | Dicrurus atripennis | Dicrurus atripennis |
| Shining Flycatcher | Myiagra alecto | Myiagra alecto |
| Shining Honeycreeper | Cyanerpes lucidus | Cyanerpes lucidus |
| Shining Sunbeam | Aglaeactis cupripennis | Aglaeactis cupripennis |
| Shining Sunbird | Nectarinia habessinica | Nectarinia habessinica |
| Shiny Cowbird | Molothrus bonariensis | Molothrus bonariensis |
| Short-billed Antwren | Myrmotherula obscura | Myrmotherula obscura |
| Short-billed Canastero | Thripophaga baeri | Asthenes baeri |
| Short-billed Dowitcher | Limnodromus griseus | Limnodromus griseus |
| Short-billed Honeycreeper | Cyanerpes nitidus | Cyanerpes nitidus |
| Short-billed Miner | Geositta antarctica | Geositta antarctica |
| Short-billed Minivet | Pericrocotus brevirostris | Pericrocotus brevirostris |
| Short-billed Pigeon | Columba nigrirostris | Columba nigrirostris |
| Short-billed Pipit | Anthus furcatus | Anthus furcatus |
| Short-clawed Lark | Certhilauda chuana | Certhilauda chuana |
| Short-crested Coquette | Lophornis brachylopha | Lophornis brachylopha |
| Short-crested Flycatcher | Myiarchus ferox | Myiarchus ferox |
| Short-eared Owl | Asio flammeus | Asio flammeus |
| Short-tailed Albatross | Diomedea albatrus | Diomedea albatrus |
| Short-tailed Emerald | Chlorostilbon poortmani | Chlorostilbon poortmani |
| Short-tailed Finch | Idiopsar brachyurus | Idiopsar brachyurus |
| Short-tailed Hawk | Buteo brachyurus | Buteo brachyurus |
| Short-tailed Lark | Pseudalaemon fremantlii | Pseudalaemon fremantlii |
| Short-tailed Paradigalla | Paradigalla brevicauda | Paradigalla brevicauda |
| Short-tailed Parrot | Graydidascalus brachyurus | Graydidascalus brachyurus |
| Short-tailed Pipit | Anthus brachyurus | Anthus brachyurus |
| Short-tailed Shearwater | Puffinus tenuirostris | Puffinus tenuirostris |
| Short-tailed Starling | Aplonis minor | Aplonis minor |
| Short-tailed Swift | Chaetura brachyura | Chaetura brachyura |
| Short-tailed Woodstar | Myrmia micrura | Myrmia micrura |
| Short-toed Coucal | Centropus rectunguis | Centropus rectunguis |
| Short-winged Grebe | Rollandia micropterum | Rollandia microptera |
| Shovel-billed Kookaburra | Clytoceyx rex | Clytoceyx rex |
| Shrike-like Cotinga | Laniisoma elegans | Laniisoma elegans |
| Shy Albatross | Diomedea cauta | Diomedea cauta |
| Siberian Blue Robin | Erithacus cyane | Luscinia cyane |
| Siberian Jay | Perisoreus infaustus | Perisoreus infaustus |
| Siberian Rubythroat | Erithacus calliope | Luscinia calliope |
| Siberian Tit | Parus cinctus | Parus cinctus |
| Sickle-winged Guan | Chamaepetes goudotii | Chamaepetes goudotii |
| Sickle-winged Nightjar | Eleothreptus anomalus | Eleothreptus anomalus |
| Sicklewing Chat | Cercomela sinuata | Cercomela sinuata |
| Sidamo Lark | Heteromirafra sidamoensis | Heteromirafra sidamoensis |
| Sierra Leone Prinia | Prinia leontica | Prinia leontica |
| Sierra Madre Sparrow | Xenospiza baileyi | Xenospiza baileyi |
| Sierran Elaenia | Elaenia pallatangae | Elaenia pallatangae |
| Siffling Cisticola | Cisticola brachyptera | Cisticola brachypterus |
| Silktail | Lamprolia victoriae | Lamprolia victoriae |
| Silky-tailed Nightjar | Caprimulgus sericocaudatus | Caprimulgus sericocaudatus |
| Silver Gull | Larus novaehollandiae | Larus novaehollandiae |
| Silver Pheasant | Lophura nycthemera | Lophura nycthemera |
| Silver-beaked Tanager | Ramphocelus carbo | Ramphocelus carbo |
| Silver-breasted Broadbill | Serilophus lunatus | Serilophus lunatus |
| Silver-crowned Friarbird | Philemon argenticeps | Philemon argenticeps |
| Silver-eared Honeyeater | Lichmera incana | Lichmera alboauricularis |
| Silver-eared Mesia | Leiothrix argentauris | Leiothrix argentauris |
| Silver-throated Tanager | Tangara icterocephala | Tangara icterocephala |
| Silverbird | Melaenornis semipartitus | Empidornis semipartitus |
| Silvery Grebe | Podiceps occipitalis | Podiceps occipitalis |
| Silvery Kingfisher | Ceyx argentatus | Alcedo argentata |
| Silvery-cheeked Antshrike | Sakesphorus cristatus | Sakesphorus cristatus |
| Silvery-cheeked Hornbill | Ceratogymna brevis | Ceratogymna brevis |
| Silvery-fronted Tapaculo | Scytalopus argentifrons | Scytalopus argentifrons |
| Silvery-throated Jay | Cyanolyca argentigula | Cyanolyca argentigula |
| Silvery-throated Spinetail | Synallaxis subpudica | Synallaxis subpudica |
| Simple Greenbul | Chlorocichla simplex | Chlorocichla simplex |
| Sinaloa Crow | Corvus sinaloae | Corvus sinaloae |
| Sinaloa Martin | Progne sinaloae | Progne sinaloae |
| Sind Woodpecker | Picoides assimilis | Dendrocopos assimilis |
| Singing Cisticola | Cisticola cantans | Cisticola cantans |
| Singing Honeyeater | Meliphaga virescens | Lichenostomus virescens |
| Singing Parrot | Geoffroyus heteroclitus | Geoffroyus heteroclitus |
| Singing Quail | Dactylortyx thoracicus | Dactylortyx thoracicus |
| Singing Starling | Aplonis cantoroides | Aplonis cantoroides |
| Sira Tanager | Tangara phillipsi | Tangara phillipsi |
| Sirystes | Sirystes sibilator | Sirystes sibilator |
| Sladen's Barbet | Gymnobucco sladeni | Gymnobucco sladeni |
| Slate-crowned Antpitta | Grallaricula nana | Grallaricula nana |
| Slate-throated Gnatcatcher | Polioptila schistaceigula | Polioptila schistaceigula |
| Slate-throated Redstart | Myioborus miniatus | Myioborus miniatus |
| Slaty Antshrike | Thamnophilus punctatus | Thamnophilus punctatus |
| Slaty Antwren | Myrmotherula schisticolor | Myrmotherula schisticolor |
| Slaty Becard | Pachyramphus spodiurus | Pachyramphus spodiurus |
| Slaty Bristlefront | Merulaxis ater | Merulaxis ater |
| Slaty Egret | Egretta vinaceigula | Egretta vinaceigula |
| Slaty Elaenia | Elaenia strepera | Elaenia strepera |
| Slaty Finch | Haplospiza rustica | Haplospiza rustica |
| Slaty Gnateater | Conopophaga ardesiaca | Conopophaga ardesiaca |
| Slaty Spinetail | Synallaxis brachyura | Synallaxis brachyura |
| Slaty Tanager | Creurgops dentata | Creurgops dentata |
| Slaty Vireo | Vireo brevipennis | Vireo brevipennis |
| Slaty-backed Forktail | Enicurus schistaceus | Enicurus schistaceus |
| Slaty-backed Gull | Larus schistisagus | Larus schistisagus |
| Slaty-backed Hemispingus | Hemispingus goeringi | Hemispingus goeringi |
| Slaty-breasted Tinamou | Crypturellus boucardi | Crypturellus boucardi |
| Slaty-headed Parakeet | Psittacula himalayana | Psittacula himalayana |
| Slaty-tailed Trogon | Trogon massena | Trogon massena |
| Slender Antbird | Rhopornis ardesiaca | Rhopornis ardesiaca |
| Slender Sheartail | Doricha enicura | Doricha enicura |
| Slender-billed Babbler | Turdoides longirostris | Turdoides longirostris |
| Slender-billed Crow | Corvus enca | Corvus enca |
| Slender-billed Curlew | Numenius tenuirostris | Numenius tenuirostris |
| Slender-billed Finch | Xenospingus concolor | Xenospingus concolor |
| Slender-billed Greenbul | Pycnonotus gracilirostris | Andropadus gracilirostris |
| Slender-billed Gull | Larus genei | Larus genei |
| Slender-billed Kite | Rostrhamus hamatus | Rostrhamus hamatus |
| Slender-billed Miner | Geositta tenuirostris | Geositta tenuirostris |
| Slender-billed Prion | Pachyptila belcheri | Pachyptila belcheri |
| Slender-billed Tyrannulet | Inezia tenuirostris | Inezia tenuirostris |
| Slender-billed Weaver | Ploceus pelzelni | Ploceus pelzelni |
| Slender-billed White-eye | Zosterops tenuirostris | Zosterops tenuirostris |
| Slender-billed Wren | Hylorchilus sumichrasti | Hylorchilus sumichrasti |
| Slender-billed Xenops | Xenops tenuirostris | Xenops tenuirostris |
| Slender-footed Tyrannulet | Zimmerius gracilipes | Zimmerius gracilipes |
| Slender-tailed Nightjar | Scotornis clarus | Caprimulgus clarus |
| Slender-tailed Woodstar | Microstilbon burmeisteri | Microstilbon burmeisteri |
| Small Blue Kingfisher | Alcedo coerulescens | Alcedo coerulescens |
| Small Lifu White-eye | Zosterops minuta | Zosterops minutus |
| Small Minivet | Pericrocotus cinnamomeus | Pericrocotus cinnamomeus |
| Small Niltava | Niltava macgrigoriae | Niltava macgrigoriae |
| Small-billed Elaenia | Elaenia parvirostris | Elaenia parvirostris |
| Small-billed Tinamou | Crypturellus parvirostris | Crypturellus parvirostris |
| Smew | Mergus albellus | Mergellus albellus |
| Smith's Longspur | Calcarius pictus | Calcarius pictus |
| Smoky Bush-Tyrant | Myiotheretes fumigatus | Myiotheretes fumigatus |
| Smoky Warbler | Phylloscopus fuligiventer | Phylloscopus fuligiventer |
| Smoky-brown Woodpecker | Veniliornis fumigatus | Veniliornis fumigatus |
| Smooth-billed Ani | Crotophaga ani | Crotophaga ani |
| Snow Bunting | Plectrophenax nivalis | Plectrophenax nivalis |
| Snow Goose | Anser caerulescens | Anser caerulescens |
| Snow Mountain Quail | Anurophasis monorthonyx | Anurophasis monorthonyx |
| Snow Partridge | Lerwa lerwa | Lerwa lerwa |
| Snow Petrel | Pagodroma nivea | Pagodroma nivea |
| Snow Pigeon | Columba leuconota | Columba leuconota |
| Snow-capped Manakin | Pipra nattereri | Pipra nattereri |
| Snowcap | Microchera albocoronata | Microchera albocoronata |
| Snowy Cotinga | Carpodectes nitidus | Carpodectes nitidus |
| Snowy Egret | Egretta thula | Egretta thula |
| Snowy Owl | Nyctea scandiaca | Nyctea scandiaca |
| Snowy Sheathbill | Chionis alba | Chionis alba |
| Snowy-breasted Hummingbird | Amazilia edward | Amazilia edward |
| Snowy-throated Kingbird | Tyrannus niveigularis | Tyrannus niveigularis |
| Sociable Weaver | Philetairus socius | Philetairus socius |
| Social Flycatcher | Myiozetetes similis | Myiozetetes similis |
| Socotra Cisticola | Cisticola haesitata | Cisticola incanus |
| Socotra Cormorant | Phalacrocorax nigrogularis | Phalacrocorax nigrogularis |
| Socotra Sparrow | Passer insularis | Passer insularis |
| Socotra Sunbird | Nectarinia balfouri | Nectarinia balfouri |
| Soft-plumaged Petrel | Pterodroma mollis | Pterodroma mollis |
| Sokoke Pipit | Anthus sokokensis | Anthus sokokensis |
| Solitary Cacique | Cacicus solitarius | Cacicus solitarius |
| Solitary Sandpiper | Tringa solitaria | Tringa solitaria |
| Solitary Snipe | Gallinago solitaria | Gallinago solitaria |
| Solitary Tinamou | Tinamus solitarius | Tinamus solitarius |
| Solomon Islands White-eye | Zosterops rendovae | Zosterops kulambangrae |
| Somali Fiscal | Lanius somalicus | Lanius somalicus |
| Somali Golden-breasted Bunting | Emberiza poliopleura | Emberiza poliopleura |
| Somali Lark | Mirafra somalica | Mirafra sharpii |
| Somali Pigeon | Columba oliviae | Columba oliviae |
| Somali Sparrow | Passer castanopterus | Passer castanopterus |
| Somali Tit | Parus thruppi | Parus thruppi |
| Somali Wheatear | Oenanthe phillipsi | Oenanthe phillipsi |
| Sombre Greenbul | Pycnonotus importunus | Andropadus importunus |
| Sombre Hummingbird | Aphantochroa cirrochloris | Aphantochroa cirrochloris |
| Sombre Kingfisher | Halcyon funebris | Todirhamphus funebris |
| Sombre Nightjar | Caprimulgus fraenatus | Caprimulgus fraenatus |
| Sombre Tit | Parus lugubris | Parus lugubris |
| Song Sparrow | Melospiza melodia | Melospiza melodia |
| Song Thrush | Turdus philomelos | Turdus philomelos |
| Sooty Albatross | Phoebetria fusca | Phoebetria fusca |
| Sooty Ant-Tanager | Habia gutturalis | Habia gutturalis |
| Sooty Antbird | Myrmeciza fortis | Myrmeciza fortis |
| Sooty Barbthroat | Threnetes niger | Threnetes niger |
| Sooty Boubou | Laniarius leucorhynchus | Laniarius leucorhynchus |
| Sooty Chat | Myrmecocichla nigra | Myrmecocichla nigra |
| Sooty Falcon | Falco concolor | Falco concolor |
| Sooty Grassquit | Tiaris fuliginosa | Tiaris fuliginosa |
| Sooty Gull | Larus hemprichii | Larus hemprichii |
| Sooty Oystercatcher | Haematopus fuliginosus | Haematopus fuliginosus |
| Sooty Shearwater | Puffinus griseus | Puffinus griseus |
| Sooty Swift | Cypseloides fumigatus | Cypseloides fumigatus |
| Sooty Tern | Sterna fuscata | Sterna fuscata |
| Sooty Tyrannulet | Serpophaga nigricans | Serpophaga nigricans |
| Sooty Woodpecker | Mulleripicus funebris | Mulleripicus funebris |
| Sooty-capped Babbler | Malacopteron affine | Malacopteron affine |
| Sooty-capped Hermit | Phaethornis augusti | Phaethornis augusti |
| Sooty-capped Puffbird | Bucco noanamae | Bucco noanamae |
| Sooty-crowned Flycatcher | Myiarchus phaeocephalus | Myiarchus phaeocephalus |
| Sooty-faced Finch | Lysurus crassirostris | Lysurus crassirostris |
| Sooty-fronted Spinetail | Synallaxis frontalis | Synallaxis frontalis |
| Sooty-headed Tyrannulet | Phyllomyias griseiceps | Phyllomyias griseiceps |
| Sooty-headed Wren | Thryothorus spadix | Thryothorus spadix |
| Souimanga Sunbird | Nectarinia souimanga | Nectarinia sovimanga |
| South African Shelduck | Tadorna cana | Tadorna cana |
| South American Tern | Sterna hirundinacea | Sterna hirundinacea |
| South Georgia Pipit | Anthus antarcticus | Anthus antarcticus |
| South Polar Skua | Catharacta maccormicki | Catharacta maccormicki |
| Southern Bentbill | Oncostoma olivaceum | Oncostoma olivaceum |
| Southern Boubou | Laniarius ferrugineus | Laniarius ferrugineus |
| Southern Fulmar | Fulmarus glacialoides | Fulmarus glacialoides |
| Southern Lapwing | Vanellus chilensis | Vanellus chilensis |
| Southern Martin | Progne modesta | Progne modesta |
| Southern Pochard | Netta erythrophthalma | Netta erythrophthalma |
| Southern Rough-winged Swallow | Stelgidopteryx ruficollis | Stelgidopteryx ruficollis |
| Southern Shrikebill | Clytorhynchus pachycephaloides | Clytorhynchus pachycephaloides |
| Southern Whiteface | Aphelocephala leucopsis | Aphelocephala leucopsis |
| Southern Yellow-billed Hornbill | Tockus leucomelas | Tockus leucomelas |
| Souza's Shrike | Lanius souzae | Lanius souzae |
| Spangle-cheeked Tanager | Tangara dowii | Tangara dowii |
| Spangled Coquette | Lophornis stictolopha | Lophornis stictolophus |
| Spangled Cotinga | Cotinga cayana | Cotinga cayana |
| Spangled Drongo | Dicrurus bracteatus | Dicrurus bracteatus |
| Spanish Sparrow | Passer hispaniolensis | Passer hispaniolensis |
| Sparkling-tailed Hummingbird | Tilmatura dupontii | Tilmatura dupontii |
| Speckle-breasted Antpitta | Hylopezus ochroleucus | Hylopezus nattereri |
| Speckle-breasted Woodpecker | Dendropicos poecilolaemus | Dendropicos poecilolaemus |
| Speckle-chested Piculet | Picumnus steindachneri | Picumnus steindachneri |
| Speckle-fronted Weaver | Sporopipes frontalis | Sporopipes frontalis |
| Speckled Hummingbird | Adelomyia melanogenys | Adelomyia melanogenys |
| Speckled Mourner | Laniocera rufescens | Laniocera rufescens |
| Speckled Mousebird | Colius striatus | Colius striatus |
| Speckled Piculet | Picumnus innominatus | Picumnus innominatus |
| Speckled Pigeon | Columba guinea | Columba guinea |
| Speckled Spinetail | Certhiaxis gutturata | Cranioleuca gutturata |
| Speckled Tanager | Tangara guttata | Tangara guttata |
| Speckled Tinkerbird | Pogoniulus scolopaceus | Pogoniulus scolopaceus |
| Spectacled Barwing | Actinodura ramsayi | Actinodura ramsayi |
| Spectacled Eider | Somateria fischeri | Somateria fischeri |
| Spectacled Fulvetta | Alcippe ruficapilla | Alcippe ruficapilla |
| Spectacled Guillemot | Cepphus carbo | Cepphus carbo |
| Spectacled Monarch | Monarcha trivirgatus | Monarcha trivirgatus |
| Spectacled Owl | Pulsatrix perspicillata | Pulsatrix perspicillata |
| Spectacled Parrotbill | Paradoxornis conspicillatus | Paradoxornis conspicillatus |
| Spectacled Parrotlet | Forpus conspicillatus | Forpus conspicillatus |
| Spectacled Prickletail | Siptornis striaticollis | Siptornis striaticollis |
| Spectacled Redstart | Myioborus melanocephalus | Myioborus melanocephalus |
| Spectacled Tyrant | Hymenops perspicillata | Hymenops perspicillatus |
| Spectacled Warbler | Sylvia conspicillata | Sylvia conspicillata |
| Spectacled Weaver | Ploceus ocularis | Ploceus ocularis |
| Speke's Weaver | Ploceus spekei | Ploceus spekei |
| Spike-heeled Lark | Chersomanes albofasciata | Chersomanes albofasciata |
| Spiny Babbler | Turdoides nipalensis | Turdoides nipalensis |
| Spiny-cheeked Honeyeater | Acanthagenys rufogularis | Acanthagenys rufogularis |
| Spix's Guan | Penelope jacquacu | Penelope jacquacu |
| Spix's Woodcreeper | Xiphorhynchus spixii | Xiphorhynchus spixii |
| Splendid Sunbird | Nectarinia coccinigastra | Nectarinia coccinigaster |
| Spot-backed Antbird | Hylophylax naevia | Hylophylax naevia |
| Spot-backed Antshrike | Hypoedaleus guttatus | Hypoedaleus guttatus |
| Spot-backed Antwren | Herpsilochmus dorsimaculatus | Herpsilochmus dorsimaculatus |
| Spot-backed Puffbird | Nystalus maculatus | Nystalus maculatus |
| Spot-billed Toucanet | Selenidera maculirostris | Selenidera maculirostris |
| Spot-breasted Antvireo | Dysithamnus stictothorax | Dysithamnus stictothorax |
| Spot-breasted Ibis | Lampribis rara | Bostrychia rara |
| Spot-breasted Parrotbill | Paradoxornis guttaticollis | Paradoxornis guttaticollis |
| Spot-breasted Woodpecker | Colaptes punctigula | Colaptes punctigula |
| Spot-breasted Wren | Thryothorus maculipectus | Thryothorus maculipectus |
| Spot-crowned Antvireo | Dysithamnus puncticeps | Dysithamnus puncticeps |
| Spot-crowned Barbet | Capito maculicoronatus | Capito maculicoronatus |
| Spot-crowned Euphonia | Euphonia imitans | Euphonia imitans |
| Spot-crowned Woodcreeper | Lepidocolaptes affinis | Lepidocolaptes affinis |
| Spot-flanked Gallinule | Gallinula melanops | Gallinula melanops |
| Spot-fronted Swift | Cypseloides cherriei | Cypseloides cherriei |
| Spot-tailed Antwren | Herpsilochmus sticturus | Herpsilochmus sticturus |
| Spot-tailed Nightjar | Caprimulgus maculicaudus | Caprimulgus maculicaudus |
| Spot-throated Hummingbird | Leucippus taczanowskii | Leucippus taczanowskii |
| Spot-throated Woodcreeper | Deconychura stictolaema | Deconychura stictolaema |
| Spot-winged Antbird | Percnostola leucostigma | Percnostola leucostigma |
| Spot-winged Antshrike | Pygiptila stellaris | Pygiptila stellaris |
| Spot-winged Falconet | Spiziapteryx circumcinctus | Spiziapteryx circumcinctus |
| Spot-winged Monarch | Monarcha guttula | Monarcha guttulus |
| Spot-winged Parrotlet | Touit stictoptera | Touit stictoptera |
| Spot-winged Rosefinch | Carpodacus rodopeplus | Carpodacus rodopeplus |
| Spot-winged Starling | Saroglossa spiloptera | Saroglossa spiloptera |
| Spotless Starling | Sturnus unicolor | Sturnus unicolor |
| Spotted Antbird | Hylophylax naevioides | Hylophylax naevioides |
| Spotted Antpitta | Hylopezus macularius | Hylopezus macularius |
| Spotted Bamboowren | Psilorhamphus guttatus | Psilorhamphus guttatus |
| Spotted Barbtail | Margarornis brunnescens | Premnoplex brunnescens |
| Spotted Berrypecker | Rhamphocharis crassirostris | Melanocharis crassirostris |
| Spotted Bowerbird | Chlamydera maculata | Chlamydera maculata |
| Spotted Catbird | Ailuroedus melanotis | Ailuroedus melanotis |
| Spotted Crake | Porzana porzana | Porzana porzana |
| Spotted Fantail | Rhipidura spilodera | Rhipidura perlata |
| Spotted Flycatcher | Muscicapa striata | Muscicapa striata |
| Spotted Forktail | Enicurus maculatus | Enicurus maculatus |
| Spotted Greenbul | Ixonotus guttatus | Ixonotus guttatus |
| Spotted Harrier | Circus assimilis | Circus assimilis |
| Spotted Honeyeater | Meliphaga polygramma | Xanthotis polygramma |
| Spotted Honeyguide | Indicator maculatus | Indicator maculatus |
| Spotted Nothura | Nothura maculosa | Nothura maculosa |
| Spotted Nutcracker | Nucifraga caryocatactes | Nucifraga caryocatactes |
| Spotted Owl | Strix occidentalis | Strix occidentalis |
| Spotted Owlet | Athene brama | Athene brama |
| Spotted Pardalote | Pardalotus punctatus | Pardalotus punctatus |
| Spotted Piculet | Picumnus pygmaeus | Picumnus pygmaeus |
| Spotted Puffbird | Bucco tamatia | Bucco tamatia |
| Spotted Rail | Rallus maculatus | Pardirallus maculatus |
| Spotted Redshank | Tringa erythropus | Tringa erythropus |
| Spotted Sandgrouse | Pterocles senegallus | Pterocles senegallus |
| Spotted Sandpiper | Actitis macularia | Tringa macularia |
| Spotted Tanager | Tangara punctata | Tangara punctata |
| Spotted Woodcreeper | Xiphorhynchus erythropygius | Xiphorhynchus erythropygius |
| Spotted Wren | Campylorhynchus gularis | Campylorhynchus gularis |
| Sprague's Pipit | Anthus spragueii | Anthus spragueii |
| Spruce Grouse | Dendragapus canadensis | Dendragapus canadensis |
| Spur-winged Goose | Plectropterus gambensis | Plectropterus gambensis |
| Squacco Heron | Ardeola ralloides | Ardeola ralloides |
| Squamate Antbird | Myrmeciza squamosa | Myrmeciza squamosa |
| Square-tailed Drongo | Dicrurus ludwigii | Dicrurus ludwigii |
| Square-tailed Kite | Lophoictinia isura | Lophoictinia isura |
| Squirrel Cuckoo | Piaya cayana | Piaya cayana |
| St. Andrew Vireo | Vireo caribaeus | Vireo caribaeus |
| St. Lucia Black Finch | Melanospiza richardsoni | Melanospiza richardsoni |
| St. Lucia Oriole | Icterus laudabilis | Icterus laudabilis |
| Standard-winged Nightjar | Macrodipteryx longipennis | Macrodipteryx longipennis |
| Star Finch | Neochmia ruficauda | Neochmia ruficauda |
| Star-spotted Nightjar | Caprimulgus stellatus | Caprimulgus stellatus |
| Star-throated Antwren | Myrmotherula gularis | Myrmotherula gularis |
| Stark's Lark | Eremalauda starki | Eremalauda starki |
| Steel-blue Flycatcher | Myiagra ferrocyanea | Myiagra ferrocyanea |
| Steel-blue Whydah | Vidua hypocherina | Vidua hypocherina |
| Steely-vented Hummingbird | Amazilia saucerrottei | Amazilia saucerrottei |
| Steere's Liocichla | Liocichla steerii | Liocichla steerii |
| Stejneger's Petrel | Pterodroma longirostris | Pterodroma longirostris |
| Steller's Eider | Polysticta stelleri | Polysticta stelleri |
| Steller's Jay | Cyanocitta stelleri | Cyanocitta stelleri |
| Stierling's Woodpecker | Dendropicos stierlingi | Dendropicos stierlingi |
| Stilt Sandpiper | Micropalama himantopus | Micropalama himantopus |
| Stipple-throated Antwren | Myrmotherula haematonota | Myrmotherula haematonota |
| Stock Pigeon | Columba oenas | Columba oenas |
| Stolid Flycatcher | Myiarchus stolidus | Myiarchus stolidus |
| Stone Partridge | Ptilopachus petrosus | Ptilopachus petrosus |
| Stork-billed Kingfisher | Halcyon capensis | Pelargopsis capensis |
| Storm's Stork | Ciconia stormi | Ciconia stormi |
| Stout Cisticola | Cisticola robusta | Cisticola robustus |
| Stout-billed Cinclodes | Cinclodes excelsior | Cinclodes excelsior |
| Straight-billed Earthcreeper | Upucerthia ruficauda | Upucerthia ruficauda |
| Straight-billed Hermit | Phaethornis bourcieri | Phaethornis bourcieri |
| Straight-billed Reedhaunter | Limnornis rectirostris | Limnornis rectirostris |
| Straight-billed Woodcreeper | Xiphorhynchus picus | Xiphorhynchus picus |
| Strange Weaver | Ploceus alienus | Ploceus alienus |
| Strange-tailed Tyrant | Alectrurus risora | Alectrurus risora |
| Straw-necked Ibis | Threskiornis spinicollis | Threskiornis spinicollis |
| Streak-backed Antshrike | Thamnophilus insignis | Thamnophilus insignis |
| Streak-backed Canastero | Thripophaga wyatti | Asthenes wyatti |
| Streak-backed Oriole | Icterus pustulatus | Icterus pustulatus |
| Streak-breasted Treehunter | Thripadectes rufobrunneus | Thripadectes rufobrunneus |
| Streak-capped Antwren | Terenura maculata | Terenura maculata |
| Streak-capped Spinetail | Certhiaxis hellmayri | Cranioleuca hellmayri |
| Streak-capped Treehunter | Thripadectes virgaticeps | Thripadectes virgaticeps |
| Streak-crowned Antvireo | Dysithamnus striaticeps | Dysithamnus striaticeps |
| Streak-fronted Thornbird | Phacellodomus striaticeps | Phacellodomus striaticeps |
| Streak-headed Woodcreeper | Lepidocolaptes souleyetii | Lepidocolaptes souleyetii |
| Streak-necked Flycatcher | Mionectes striaticollis | Mionectes striaticollis |
| Streak-throated Bush-Tyrant | Myiotheretes striaticollis | Myiotheretes striaticollis |
| Streak-throated Canastero | Thripophaga humilis | Asthenes humilis |
| Streak-throated Fulvetta | Alcippe cinereiceps | Alcippe cinereiceps |
| Streak-throated Woodpecker | Picus xanthopygaeus | Picus xanthopygaeus |
| Streaked Antwren | Myrmotherula surinamensis | Myrmotherula surinamensis |
| Streaked Barwing | Actinodura souliei | Actinodura souliei |
| Streaked Berrypecker | Melanocharis striativentris | Melanocharis striativentris |
| Streaked Flycatcher | Myiodynastes maculatus | Myiodynastes maculatus |
| Streaked Saltator | Saltator albicollis | Saltator albicollis |
| Streaked Spiderhunter | Arachnothera magna | Arachnothera magna |
| Streaked Tit-Spinetail | Leptasthenura striata | Leptasthenura striata |
| Streaked Tuftedcheek | Pseudocolaptes boissonneautii | Pseudocolaptes boissonneautii |
| Streaked Weaver | Ploceus manyar | Ploceus manyar |
| Streaked Xenops | Xenops rutilans | Xenops rutilans |
| Streaky Seedeater | Serinus striolatus | Serinus striolatus |
| Streaky-headed Seedeater | Serinus gularis | Serinus gularis |
| Streaky-headed White-eye | Lophozosterops squamiceps | Lophozosterops squamiceps |
| Streamer-tailed Tyrant | Gubernetes yetapa | Gubernetes yetapa |
| Streamertail | Trochilus polytmus | Trochilus polytmus |
| Stresemann's Bristlefront | Merulaxis stresemanni | Merulaxis stresemanni |
| Striated Antbird | Drymophila devillei | Drymophila devillei |
| Striated Babbler | Turdoides earlei | Turdoides earlei |
| Striated Bulbul | Pycnonotus leucogrammicus | Pycnonotus striatus |
| Striated Earthcreeper | Upucerthia serrana | Upucerthia serrana |
| Striated Lorikeet | Charmosyna multistriata | Charmosyna multistriata |
| Striated Pardalote | Pardalotus substriatus | Pardalotus striatus |
| Striated Softtail | Thripophaga macroura | Thripophaga macroura |
| Striated Starling | Aplonis striata | Aplonis striata |
| Striated Thornbill | Acanthiza lineata | Acanthiza lineata |
| Striated Yuhina | Yuhina castaniceps | Yuhina castaniceps |
| Strickland's Woodpecker | Picoides stricklandi | Picoides stricklandi |
| Striolated Puffbird | Nystalus striolatus | Nystalus striolatus |
| Striolated Tit-Spinetail | Leptasthenura striolata | Leptasthenura striolata |
| Stripe-backed Antbird | Myrmorchilus strigilatus | Myrmorchilus strigilatus |
| Stripe-backed Bittern | Ixobrychus involucris | Ixobrychus involucris |
| Stripe-backed Wren | Campylorhynchus nuchalis | Campylorhynchus nuchalis |
| Stripe-breasted Spinetail | Synallaxis cinnamomea | Synallaxis cinnamomea |
| Stripe-breasted Starthroat | Heliomaster squamosus | Heliomaster squamosus |
| Stripe-breasted Tit | Parus fasciiventer | Parus fasciiventer |
| Stripe-breasted Woodpecker | Picoides atratus | Dendrocopos atratus |
| Stripe-breasted Wren | Thryothorus thoracicus | Thryothorus thoracicus |
| Stripe-capped Sparrow | Aimophila strigiceps | Aimophila strigiceps |
| Stripe-cheeked Greenbul | Pycnonotus milanjensis | Andropadus milanjensis |
| Stripe-chested Antwren | Myrmotherula longicauda | Myrmotherula longicauda |
| Stripe-crowned Spinetail | Certhiaxis pyrrhophia | Cranioleuca pyrrhophia |
| Stripe-headed Antpitta | Grallaria andicola | Grallaria andicola |
| Stripe-headed Sparrow | Aimophila ruficauda | Aimophila ruficauda |
| Stripe-headed Tanager | Spindalis zena | Spindalis zena |
| Stripe-tailed Hummingbird | Eupherusa eximia | Eupherusa eximia |
| Stripe-throated Bulbul | Pycnonotus finlaysoni | Pycnonotus finlaysoni |
| Stripe-throated Jery | Neomixis striatigula | Neomixis striatigula |
| Stripe-throated Wren | Thryothorus leucopogon | Thryothorus leucopogon |
| Striped Crake | Porzana marginalis | Aenigmatolimnas marginalis |
| Striped Cuckoo | Tapera naevia | Tapera naevia |
| Striped Honeyeater | Plectorhyncha lanceolata | Plectorhyncha lanceolata |
| Striped Kingfisher | Halcyon chelicuti | Halcyon chelicuti |
| Striped Manakin | Machaeropterus regulus | Machaeropterus regulus |
| Striped Owl | Asio clamator | Asio clamator |
| Striped Pipit | Anthus lineiventris | Anthus lineiventris |
| Striped Sparrow | Oriturus superciliosus | Oriturus superciliosus |
| Striped Tit-Babbler | Macronous gularis | Macronous gularis |
| Striped Treehunter | Thripadectes holostictus | Thripadectes holostictus |
| Striped Woodcreeper | Xiphorhynchus obsoletus | Xiphorhynchus obsoletus |
| Striped Woodhaunter | Philydor subulatus | Hyloctistes subulatus |
| Striped Woodpecker | Picoides lignarius | Picoides lignarius |
| Strong-billed Honeyeater | Melithreptus validirostris | Melithreptus validirostris |
| Strong-billed Woodcreeper | Xiphocolaptes promeropirhynchus | Xiphocolaptes promeropirhynchus |
| Stub-tailed Antbird | Myrmeciza berlepschi | Myrmeciza berlepschi |
| Stub-tailed Spadebill | Platyrinchus cancrominus | Platyrinchus cancrominus |
| Stuhlmann's Double-collared Sunbird | Nectarinia stuhlmanni | Nectarinia stuhlmanni |
| Stuhlmann's Starling | Poeoptera stuhlmanni | Poeoptera stuhlmanni |
| Stygian Owl | Asio stygius | Asio stygius |
| Subalpine Warbler | Sylvia cantillans | Sylvia cantillans |
| Subtropical Doradito | Pseudocolopteryx acutipennis | Pseudocolopteryx acutipennis |
| Sula Cicadabird | Coracina sula | Coracina sula |
| Sulawesi Cicadabird | Coracina morio | Coracina morio |
| Sulawesi Hornbill | Aceros cassidix | Penelopides exarhatus |
| Sulawesi Woodcock | Scolopax celebensis | Scolopax celebensis |
| Sulphur-bellied Flycatcher | Myiodynastes luteiventris | Myiodynastes luteiventris |
| Sulphur-bellied Tyrannulet | Mecocerculus minor | Mecocerculus minor |
| Sulphur-crested Cockatoo | Cacatua galerita | Cacatua galerita |
| Sulphur-rumped Flycatcher | Myiobius barbatus | Myiobius barbatus |
| Sulphury Flycatcher | Tyrannopsis sulphurea | Tyrannopsis sulphurea |
| Sultan Tit | Melanochlora sultanea | Melanochlora sultanea |
| Sulu Hornbill | Anthracoceros montani | Anthracoceros montani |
| Sumatran Cochoa | Cochoa beccarii | Cochoa beccarii |
| Sumatran Drongo | Dicrurus sumatranus | Dicrurus sumatranus |
| Sumba Brown Flycatcher | Muscicapa segregata | Muscicapa segregata |
| Sumba Cicadabird | Coracina dohertyi | Coracina dohertyi |
| Summer Tanager | Piranga rubra | Piranga rubra |
| Sun Lark | Galerida modesta | Galerida modesta |
| Sunda Coucal | Centropus nigrorufus | Centropus nigrorufus |
| Sunda Minivet | Pericrocotus miniatus | Pericrocotus miniatus |
| Sunda Teal | Anas gibberifrons | Anas gibberifrons |
| Superb Lyrebird | Menura novaehollandiae | Menura novaehollandiae |
| Superb Parrot | Polytelis swainsonii | Polytelis swainsonii |
| Superb Pitta | Pitta superba | Pitta superba |
| Superb Starling | Lamprotornis superbus | Lamprotornis superbus |
| Superb Sunbird | Nectarinia superba | Nectarinia superba |
| Superciliaried Hemispingus | Hemispingus superciliaris | Hemispingus superciliaris |
| Superciliated Wren | Thryothorus superciliaris | Thryothorus superciliaris |
| Surf Scoter | Melanitta perspicillata | Melanitta perspicillata |
| Surfbird | Aphriza virgata | Aphriza virgata |
| Surucua Trogon | Trogon surrucura | Trogon surrucura |
| Swahili Sparrow | Passer suahelicus | Passer suahelicus |
| Swainson's Flycatcher | Myiarchus swainsoni | Myiarchus swainsoni |
| Swainson's Hawk | Buteo swainsonii | Buteo swainsoni |
| Swainson's Sparrow | Passer swainsonii | Passer swainsonii |
| Swainson's Thrush | Catharus ustulatus | Catharus ustulatus |
| Swainson's Warbler | Limnothlypis swainsonii | Limnothlypis swainsonii |
| Swallow Tanager | Tersina viridis | Tersina viridis |
| Swallow-tailed Cotinga | Phibalura flavirostris | Phibalura flavirostris |
| Swallow-tailed Gull | Creagrus furcatus | Creagrus furcatus |
| Swallow-tailed Hummingbird | Eupetomena macroura | Eupetomena macroura |
| Swallow-tailed Kite | Elanoides forficatus | Elanoides forficatus |
| Swallow-tailed Manakin | Chiroxiphia caudata | Chiroxiphia caudata |
| Swallow-tailed Nightjar | Uropsalis segmentata | Uropsalis segmentata |
| Swamp Sparrow | Melospiza georgiana | Melospiza georgiana |
| Swan Goose | Anser cygnoides | Anser cygnoides |
| Swee Waxbill | Estrilda melanotis | Estrilda melanotis |
| Swierstra's Francolin | Francolinus swierstrai | Francolinus swierstrai |
| Swift Parrot | Lathamus discolor | Lathamus discolor |
| Swinhoe's Pheasant | Lophura swinhoii | Lophura swinhoii |
| Swinhoe's Snipe | Gallinago megala | Gallinago megala |
| Sword-billed Hummingbird | Ensifera ensifera | Ensifera ensifera |
| Sykes's Nightjar | Caprimulgus mahrattensis | Caprimulgus mahrattensis |
| Sykes's Warbler | Hippolais rama | Hippolais rama |
| Syrian Serin | Serinus syriacus | Serinus syriacus |
| Syrian Woodpecker | Picoides syriacus | Dendrocopos syriacus |
| Tabora Cisticola | Cisticola angusticauda | Cisticola angusticauda |
| Tacazze Sunbird | Nectarinia tacazze | Nectarinia tacazze |
| Tachira Antpitta | Grallaria chthonia | Grallaria chthonia |
| Tachira Emerald | Amazilia distans | Amazilia distans |
| Taczanowski's Tinamou | Nothoprocta taczanowskii | Nothoprocta taczanowskii |
| Tahiti Petrel | Pseudobulwaria rostrata | Pterodroma rostrata |
| Takahe | Porphyrio mantelli | Porphyrio mantelli |
| Tamarugo Conebill | Conirostrum tamarugensis | Conirostrum tamarugense |
| Tamaulipas Crow | Corvus imparatus | Corvus imparatus |
| Tambourine Dove | Turtur tympanistria | Turtur tympanistria |
| Tana River Cisticola | Cisticola restricta | Cisticola restrictus |
| Tanager Finch | Oreothraupis arremonops | Oreothraupis arremonops |
| Tanimbar Starling | Aplonis crassa | Aplonis crassa |
| Tasmanian Thornbill | Acanthiza ewingii | Acanthiza ewingii |
| Tataupa Tinamou | Crypturellus tataupa | Crypturellus tataupa |
| Taveta Golden Weaver | Ploceus castaneiceps | Ploceus castaneiceps |
| Tawny Antpitta | Grallaria quitensis | Grallaria quitensis |
| Tawny Eagle | Aquila rapax | Aquila rapax |
| Tawny Frogmouth | Podargus strigoides | Podargus strigoides |
| Tawny Piculet | Picumnus fulvescens | Picumnus fulvescens |
| Tawny Pipit | Anthus campestris | Anthus campestris |
| Tawny Tit-Spinetail | Leptasthenura yanacensis | Leptasthenura yanacensis |
| Tawny-bellied Hermit | Phaethornis syrmatophorus | Phaethornis syrmatophorus |
| Tawny-bellied Seedeater | Sporophila hypoxantha | Sporophila hypoxantha |
| Tawny-breasted Flycatcher | Myiobius villosus | Myiobius villosus |
| Tawny-breasted Honeyeater | Meliphaga flaviventer | Xanthotis flaviventer |
| Tawny-breasted Tinamou | Nothocercus julius | Nothocercus julius |
| Tawny-browed Owl | Pulsatrix koeniswaldiana | Pulsatrix koeniswaldiana |
| Tawny-capped Euphonia | Euphonia anneae | Euphonia anneae |
| Tawny-chested Flycatcher | Aphanotriccus capitalis | Aphanotriccus capitalis |
| Tawny-collared Nightjar | Caprimulgus salvini | Caprimulgus salvini |
| Tawny-crested Tanager | Tachyphonus delatrii | Tachyphonus delatrii |
| Tawny-crowned Greenlet | Hylophilus ochraceiceps | Hylophilus ochraceiceps |
| Tawny-crowned Honeyeater | Glyciphilus melanops | Phylidonyris melanops |
| Tawny-faced Quail | Rhynchortyx cinctus | Rhynchortyx cinctus |
| Tawny-flanked Prinia | Prinia subflava | Prinia subflava |
| Tawny-headed Swallow | Alopochelidon fucata | Stelgidopteryx fucata |
| Tawny-rumped Tyrannulet | Phyllomyias uropygialis | Phyllomyias uropygialis |
| Tawny-shouldered Blackbird | Agelaius humeralis | Agelaius humeralis |
| Tawny-throated Dotterel | Eudromias ruficollis | Oreopholus ruficollis |
| Tawny-tufted Toucanet | Selenidera nattereri | Selenidera nattereri |
| Tawny-winged Woodcreeper | Dendrocincla anabatina | Dendrocincla anabatina |
| Temminck's Courser | Cursorius temminckii | Cursorius temminckii |
| Temminck's Seedeater | Sporophila falcirostris | Sporophila falcirostris |
| Temminck's Stint | Calidris temminckii | Calidris temminckii |
| Temminck's Tragopan | Tragopan temminckii | Tragopan temminckii |
| Tennessee Warbler | Vermivora peregrina | Vermivora peregrina |
| Tepui Goldenthroat | Polytmus milleri | Polytmus milleri |
| Tepui Greenlet | Hylophilus sclateri | Hylophilus sclateri |
| Tepui Manakin | Pipra suavissima | Pipra suavissima |
| Tepui Parrotlet | Nannopsittaca panychlora | Nannopsittaca panychlora |
| Tepui Spinetail | Certhiaxis demissa | Cranioleuca demissa |
| Tepui Swift | Cypseloides phelpsi | Cypseloides phelpsi |
| Tepui Tinamou | Crypturellus ptaritepui | Crypturellus ptaritepui |
| Tepui Wren | Troglodytes rufulus | Troglodytes rufulus |
| Terek Sandpiper | Xenus cinereus | Tringa cinerea |
| Terrestrial Brownbul | Phyllastrephus terrestris | Phyllastrephus terrestris |
| Tessmann's Flycatcher | Muscicapa tessmanni | Muscicapa tessmanni |
| Thekla Lark | Galerida malabarica | Galerida theklae |
| Thick-billed Cuckoo | Pachycoccyx audeberti | Pachycoccyx audeberti |
| Thick-billed Euphonia | Euphonia laniirostris | Euphonia laniirostris |
| Thick-billed Flowerpecker | Dicaeum agile | Dicaeum agile |
| Thick-billed Honeyguide | Indicator conirostris | Indicator conirostris |
| Thick-billed Kingbird | Tyrannus crassirostris | Tyrannus crassirostris |
| Thick-billed Lark | Ramphocoris clotbey | Ramphocoris clotbey |
| Thick-billed Miner | Geositta crassirostris | Geositta crassirostris |
| Thick-billed Parrot | Rhynchopsitta pachyrhyncha | Rhynchopsitta pachyrhyncha |
| Thick-billed Raven | Corvus crassirostris | Corvus crassirostris |
| Thick-billed Saltator | Saltator maxillosus | Saltator maxillosus |
| Thick-billed Seedeater | Serinus burtoni | Serinus burtoni |
| Thick-billed Siskin | Carduelis crassirostris | Carduelis crassirostris |
| Thick-billed Spiderhunter | Arachnothera crassirostris | Arachnothera crassirostris |
| Thick-billed Vireo | Vireo crassirostris | Vireo crassirostris |
| Thick-billed Warbler | Acrocephalus aedon | Acrocephalus aedon |
| Thicket Tinamou | Crypturellus cinnamomeus | Crypturellus cinnamomeus |
| Thorn-tailed Rayadito | Aphrastura spinicauda | Aphrastura spinicauda |
| Three-banded Plover | Charadrius tricollaris | Charadrius tricollaris |
| Three-banded Rosefinch | Carpodacus trifasciatus | Carpodacus trifasciatus |
| Three-banded Warbler | Basileuterus trifasciatus | Basileuterus trifasciatus |
| Three-streaked Tchagra | Tchagra jamesi | Tchagra jamesi |
| Three-striped Flycatcher | Conopias trivirgata | Conopias trivirgata |
| Three-striped Hemispingus | Hemispingus trifasciatus | Hemispingus trifasciatus |
| Three-striped Warbler | Basileuterus tristriatus | Basileuterus tristriatus |
| Three-toed Jacamar | Jacamaralcyon tridactyla | Jacamaralcyon tridactyla |
| Three-toed Parrotbill | Paradoxornis paradoxus | Paradoxornis paradoxus |
| Three-toed Woodpecker | Picoides tridactylus | Picoides tridactylus |
| Three-wattled Bellbird | Procnias tricarunculata | Procnias tricarunculata |
| Thrush Nightingale | Luscinia luscinia | Luscinia luscinia |
| Thrush-like Antpitta | Myrmothera campanisona | Myrmothera campanisona |
| Thrush-like Wren | Campylorhynchus turdinus | Campylorhynchus turdinus |
| Tibetan Eared-Pheasant | Crossoptilon harmani | Crossoptilon harmani |
| Tibetan Partridge | Perdix hodgsoniae | Perdix hodgsoniae |
| Tibetan Sandgrouse | Syrrhaptes tibetanus | Syrrhaptes tibetanus |
| Tibetan Serin | Serinus thibetanus | Serinus thibetanus |
| Tibetan Snowcock | Tetraogallus tibetanus | Tetraogallus tibetanus |
| Tickell's Thrush | Turdus unicolor | Turdus unicolor |
| Tiger Shrike | Lanius tigrinus | Lanius tigrinus |
| Timberline Wren | Thryorchilus browni | Thryorchilus browni |
| Timor Stubtail | Urosphena subulata | Urosphena subulata |
| Tinian Monarch | Monarcha takatsukasae | Monarcha takatsukasae |
| Tink-tink Cisticola | Cisticola textrix | Cisticola textrix |
| Tiny Cisticola | Cisticola nana | Cisticola nanus |
| Tiny Greenbul | Phyllastrephus debilis | Phyllastrephus debilis |
| Tiny Sunbird | Nectarinia minulla | Nectarinia minulla |
| Tit Berrypecker | Oreocharis arfaki | Oreocharis arfaki |
| Tit-like Dacnis | Xenodacnis parina | Xenodacnis parina |
| Toco Toucan | Ramphastos toco | Ramphastos toco |
| Tocuyo Sparrow | Arremonops tocuyensis | Arremonops tocuyensis |
| Todd's Antwren | Herpsilochmus stictocephalus | Herpsilochmus stictocephalus |
| Tolima Dove | Leptotila conoveri | Leptotila conoveri |
| Tooth-billed Catbird | Scenopoeetes dentirostris | Ailuroedus dentirostris |
| Tooth-billed Hummingbird | Androdon aequatorialis | Androdon aequatorialis |
| Tooth-billed Pigeon | Didunculus strigirostris | Didunculus strigirostris |
| Tooth-billed Wren | Odontorchilus cinereus | Odontorchilus cinereus |
| Torrent Duck | Merganetta armata | Merganetta armata |
| Torrent Tyrannulet | Serpophaga cinerea | Serpophaga cinerea |
| Toucan Barbet | Semnornis ramphastinus | Semnornis ramphastinus |
| Tourmaline Sunangel | Heliangelus exortis | Heliangelus exortis |
| Townsend's Shearwater | Puffinus auricularis | Puffinus auricularis |
| Townsend's Solitaire | Myadestes townsendi | Myadestes townsendi |
| Townsend's Warbler | Dendroica townsendi | Dendroica townsendi |
| Tractrac Chat | Cercomela tractrac | Cercomela tractrac |
| Tree Martin | Hirundo nigricans | Hirundo nigricans |
| Tree Pipit | Anthus trivialis | Anthus trivialis |
| Tree Swallow | Tachycineta bicolor | Tachycineta bicolor |
| Trilling Cisticola | Cisticola woosnami | Cisticola woosnami |
| Trinidad Euphonia | Euphonia trinitatis | Euphonia trinitatis |
| Tristan Thrush | Nesocichla eremita | Nesocichla eremita |
| Tristram's Bunting | Emberiza tristrami | Emberiza tristrami |
| Tristram's Starling | Onychognathus tristramii | Onychognathus tristramii |
| Tristram's Warbler | Sylvia deserticola | Sylvia deserticola |
| Trocaz Pigeon | Columba trocaz | Columba trocaz |
| Tropical Boubou | Laniarius aethiopicus | Laniarius aethiopicus |
| Tropical Gnatcatcher | Polioptila plumbea | Polioptila plumbea |
| Tropical Kingbird | Tyrannus melancholicus | Tyrannus melancholicus |
| Tropical Mockingbird | Mimus gilvus | Mimus gilvus |
| Tropical Pewee | Contopus cinereus | Contopus cinereus |
| Troupial | Icterus icterus | Icterus icterus |
| Truk Monarch | Metabolus rugensis | Metabolus rugensis |
| Truk White-eye | Rukia ruki | Rukia ruki |
| Trumpeter Finch | Rhodopechys githaginea | Rhodopechys githaginea |
| Trumpeter Hornbill | Ceratogymna bucinator | Ceratogymna bucinator |
| Trumpeter Swan | Cygnus buccinator | Cygnus buccinator |
| Tuamotu Kingfisher | Halcyon gambieri | Todirhamphus gambieri |
| Tuamotu Sandpiper | Prosobonia cancellata | Prosobonia cancellata |
| Tufted Antshrike | Mackenziaena severa | Mackenziaena severa |
| Tufted Coquette | Lophornis ornatus | Lophornis ornatus |
| Tufted Duck | Aythya fuligula | Aythya fuligula |
| Tufted Flycatcher | Mitrephanes phaeocercus | Mitrephanes phaeocercus |
| Tufted Jay | Cyanocorax dickeyi | Cyanocorax dickeyi |
| Tufted Puffin | Lunda cirrhata | Fratercula cirrhata |
| Tufted Tit-Spinetail | Leptasthenura platensis | Leptasthenura platensis |
| Tufted Titmouse | Parus bicolor | Parus bicolor |
| Tui Parakeet | Brotogeris sanctithomae | Brotogeris sanctithomae |
| Tullberg's Woodpecker | Campethera tullbergi | Campethera tullbergi |
| Tumaco Seedeater | Sporophila insulata | Sporophila insulata |
| Tumbes Hummingbird | Leucippus baeri | Leucippus baeri |
| Tumbes Sparrow | Rhynchospiza stolzmanni | Aimophila stolzmanni |
| Tumbes Tyrant | Ochthoeca salvini | Ochthoeca salvini |
| Tundra Swan | Cygnus columbianus | Cygnus columbianus |
| Turati's Boubou | Laniarius turatii | Laniarius turatii |
| Turkestan Tit | Parus bokharensis | Parus bokharensis |
| Turkey Vulture | Cathartes aura | Cathartes aura |
| Turner's Eremomela | Eremomela turneri | Eremomela turneri |
| Turquoise Jay | Cyanolyca turcosa | Cyanolyca turcosa |
| Turquoise Parrot | Neophema pulchella | Neophema pulchella |
| Turquoise Tanager | Tangara mexicana | Tangara mexicana |
| Turquoise-browed Motmot | Eumomota superciliosa | Eumomota superciliosa |
| Turquoise-throated Puffleg | Eriocnemis godini | Eriocnemis godini |
| Twite | Acanthis flavirostris | Carduelis flavirostris |
| Two-banded Plover | Charadrius falklandicus | Charadrius falklandicus |
| Two-banded Warbler | Basileuterus bivittatus | Basileuterus bivittatus |
| Tyrannine Woodcreeper | Dendrocincla tyrannina | Dendrocincla tyrannina |
| Tyrian Metaltail | Metallura tyrianthina | Metallura tyrianthina |
| Ultramarine Grosbeak | Cyanocompsa brissonii | Cyanocompsa brissonii |
| Ultramarine Kingfisher | Halcyon leucopygia | Todirhamphus leucopygius |
| Uluguru Violet-backed Sunbird | Anthreptes neglectus | Anthreptes neglectus |
| Unadorned Flycatcher | Myiophobus inornatus | Myiophobus inornatus |
| Undulated Antpitta | Grallaria squamigera | Grallaria squamigera |
| Undulated Antshrike | Frederickena unduligera | Frederickena unduligera |
| Undulated Tinamou | Crypturellus undulatus | Crypturellus undulatus |
| Uniform Antshrike | Thamnophilus unicolor | Thamnophilus unicolor |
| Uniform Crake | Eulabeornis concolor | Amaurolimnas concolor |
| Uniform Finch | Haplospiza unicolor | Haplospiza unicolor |
| Uniform Swiftlet | Aerodramus vanikorensis | Collocalia vanikorensis |
| Uniform Treehunter | Thripadectes ignobilis | Thripadectes ignobilis |
| Upcher's Warbler | Hippolais languida | Hippolais languida |
| Upland Antshrike | Thamnophilus aroyae | Thamnophilus aroyae |
| Upland Buzzard | Buteo hemilasius | Buteo hemilasius |
| Upland Pipit | Anthus sylvanus | Anthus sylvanus |
| Upland Sandpiper | Bartramia longicauda | Bartramia longicauda |
| Ural Owl | Strix uralensis | Strix uralensis |
| Usambara Weaver | Ploceus nicolli | Ploceus nicolli |
| Usambiro Barbet | Trachyphonus usambiro | Trachyphonus usambiro |
| Van Dam's Vanga | Xenopirostris damii | Xenopirostris damii |
| Variable Antshrike | Thamnophilus caerulescens | Thamnophilus caerulescens |
| Variable Indigobird | Vidua funerea | Vidua funerea |
| Variable Oystercatcher | Haematopus unicolor | Haematopus unicolor |
| Variable Pitohui | Pitohui kirhocephalus | Pitohui kirhocephalus |
| Variable Seedeater | Sporophila aurita | Sporophila americana |
| Variable Sunbird | Nectarinia venusta | Nectarinia venusta |
| Variable Wheatear | Oenanthe picata | Oenanthe picata |
| Varied Bunting | Passerina versicolor | Passerina versicolor |
| Varied Honeyeater | Meliphaga versicolor | Lichenostomus versicolor |
| Varied Lorikeet | Trichoglossus versicolor | Psitteuteles versicolor |
| Varied Sittella | Neositta chrysoptera | Daphoenositta chrysoptera |
| Varied Solitaire | Myadestes coloratus | Myadestes coloratus |
| Varied Thrush | Ixoreus naevia | Zoothera naevia |
| Varied Tit | Parus varius | Parus varius |
| Variegated Antpitta | Grallaria varia | Grallaria varia |
| Variegated Flycatcher | Empidonomus varius | Empidonomus varius |
| Variegated Tinamou | Crypturellus variegatus | Crypturellus variegatus |
| Varzea Piculet | Picumnus varzeae | Picumnus varzeae |
| Vasa Parrot | Coracopsis vasa | Coracopsis vasa |
| Vaurie's Nightjar | Caprimulgus centralasicus | Caprimulgus centralasicus |
| Vaux's Swift | Chaetura vauxi | Chaetura vauxi |
| Veery | Catharus fuscescens | Catharus fuscescens |
| Velvet Asity | Philepitta castanea | Philepitta castanea |
| Velvet-browed Brilliant | Heliodoxa xanthogonys | Heliodoxa xanthogonys |
| Velvet-fronted Euphonia | Euphonia concinna | Euphonia concinna |
| Velvet-fronted Grackle | Lampropsar tanagrinus | Lampropsar tanagrinus |
| Velvet-fronted Nuthatch | Sitta frontalis | Sitta frontalis |
| Venezuelan Flycatcher | Myiarchus venezuelensis | Myiarchus venezuelensis |
| Verdin | Auriparus flaviceps | Auriparus flaviceps |
| Vermilion Cardinal | Pyrrhuloxia phoeniceus | Cardinalis phoeniceus |
| Vermilion Flycatcher | Pyrocephalus rubinus | Pyrocephalus rubinus |
| Vermilion Tanager | Calochaetes coccineus | Calochaetes coccineus |
| Verreaux's Eagle | Aquila verreauxii | Aquila verreauxii |
| Vervain Hummingbird | Mellisuga minima | Mellisuga minima |
| Vesper Sparrow | Pooecetes gramineus | Pooecetes gramineus |
| Vieillot's Barbet | Lybius vieilloti | Lybius vieilloti |
| Vieillot's Black Weaver | Ploceus nigerrimus | Ploceus nigerrimus |
| Village Indigobird | Vidua chalybeata | Vidua chalybeata |
| Village Weaver | Ploceus cucullatus | Ploceus cucullatus |
| Vinaceous Dove | Streptopelia vinacea | Streptopelia vinacea |
| Vinaceous Rosefinch | Carpodacus vinaceus | Carpodacus vinaceus |
| Vinous-throated Parrotbill | Paradoxornis webbianus | Paradoxornis webbianus |
| Violaceous Euphonia | Euphonia violacea | Euphonia violacea |
| Violaceous Jay | Cyanocorax violaceus | Cyanocorax violaceus |
| Violaceous Trogon | Trogon violaceus | Trogon violaceus |
| Violet Cuckoo | Chalcites xanthorhynchus | Chrysococcyx xanthorhynchus |
| Violet Sabrewing | Campylopterus hemileucurus | Campylopterus hemileucurus |
| Violet Turaco | Musophaga violacea | Musophaga violacea |
| Violet-backed Starling | Sturnus philippensis | Cinnyricinclus leucogaster |
| Violet-bellied Hummingbird | Damophila julie | Damophila julie |
| Violet-breasted Sunbird | Nectarinia pembae | Nectarinia pembae |
| Violet-capped Hummingbird | Goldmania violiceps | Goldmania violiceps |
| Violet-capped Woodnymph | Thalurania glaucopis | Thalurania glaucopis |
| Violet-chested Hummingbird | Sternoclyta cyanopectus | Sternoclyta cyanopectus |
| Violet-crowned Hummingbird | Amazilia violiceps | Amazilia violiceps |
| Violet-fronted Brilliant | Heliodoxa leadbeateri | Heliodoxa leadbeateri |
| Violet-green Swallow | Tachycineta thalassina | Tachycineta thalassina |
| Violet-headed Hummingbird | Klais guimeti | Klais guimeti |
| Violet-necked Lory | Eos squamata | Eos squamata |
| Violet-tailed Sunbird | Anthreptes aurantium | Anthreptes aurantium |
| Violet-tailed Sylph | Aglaiocercus coelestis | Aglaiocercus coelestis |
| Violet-throated Metaltail | Metallura baroni | Metallura baroni |
| Violet-throated Starfrontlet | Coeligena violifer | Coeligena violifer |
| Virginia Rail | Rallus limicola | Rallus limicola |
| Virginia's Warbler | Vermivora virginiae | Vermivora virginiae |
| Viridian Dacnis | Dacnis viguieri | Dacnis viguieri |
| Viridian Metaltail | Metallura williami | Metallura williami |
| Vitelline Warbler | Dendroica vitellina | Dendroica vitellina |
| Vivid Niltava | Niltava vivida | Niltava vivida |
| Vogelkop Whistler | Pachycephala meyeri | Pachycephala meyeri |
| Volcano Hummingbird | Selasphorus flammula | Selasphorus flammula |
| Volcano Junco | Junco vulcani | Junco vulcani |
| Von der Decken's Hornbill | Tockus deckeni | Tockus deckeni |
| Vulturine Guineafowl | Acryllium vulturinum | Acryllium vulturinum |
| Vulturine Parrot | Gypopsitta vulturina | Gypopsitta vulturina |
| Wahlberg's Eagle | Hieraaetus wahlbergi | Aquila wahlbergi |
| Wailing Cisticola | Cisticola lais | Cisticola lais |
| Wallace's Owlet-Nightjar | Aegotheles wallacii | Aegotheles wallacii |
| Wallacean Drongo | Dicrurus densus | Dicrurus densus |
| Wallacean Whistler | Pachycephala arctitorquis | Pachycephala arctitorquis |
| Wallcreeper | Tichodroma muraria | Tichodroma muraria |
| Wandering Albatross | Diomedea exulans | Diomedea exulans |
| Wandering Tattler | Heteroscelus incanus | Tringa incana |
| Warbler Finch | Certhidea olivacea | Certhidea olivacea |
| Warbling Antbird | Hypocnemis cantator | Hypocnemis cantator |
| Warbling Doradito | Pseudocolopteryx flaviventris | Pseudocolopteryx flaviventris |
| Ward's Trogon | Harpactes wardi | Harpactes wardi |
| Warsangli Linnet | Acanthis johannis | Carduelis johannis |
| Water Pipit | Anthus spinoletta | Anthus spinoletta |
| Water Rail | Rallus aquaticus | Rallus aquaticus |
| Waterfall Swift | Hydrochrous gigas | Hydrochous gigas |
| Wattled Broadbill | Eurylaimus steerii | Eurylaimus steerii |
| Wattled Crane | Bugeranus carunculatus | Grus carunculatus |
| Wattled Curassow | Crax globulosa | Crax globulosa |
| Wattled Guan | Aburria aburri | Aburria aburri |
| Wattled Ibis | Bostrychia carunculata | Bostrychia carunculata |
| Wattled Jacana | Jacana jacana | Jacana jacana |
| Wattled Starling | Creatophora cinerea | Creatophora cinerea |
| Waved Albatross | Diomedea irrorata | Diomedea irrorata |
| Waved Woodpecker | Celeus undatus | Celeus undatus |
| Wedge-billed Hummingbird | Schistes geoffroyi | Augastes geoffroyi |
| Wedge-billed Woodcreeper | Glyphorhynchus spirurus | Glyphorynchus spirurus |
| Wedge-tailed Eagle | Aquila audax | Aquila audax |
| Wedge-tailed Hillstar | Oreotrochilus adela | Oreotrochilus adela |
| Wedge-tailed Jery | Neomixis flavoviridis | Neomixis flavoviridis |
| Wedge-tailed Sabrewing | Campylopterus curvipennis | Campylopterus curvipennis |
| Wedge-tailed Shearwater | Puffinus pacificus | Puffinus pacificus |
| Weebill | Smicrornis brevirostris | Smicrornis brevirostris |
| West Mexican Chachalaca | Ortalis poliocephala | Ortalis poliocephala |
| Western Black-headed Oriole | Oriolus brachyrhynchus | Oriolus brachyrhynchus |
| Western Bluebill | Spermophaga haematina | Spermophaga haematina |
| Western Bluebird | Sialia mexicana | Sialia mexicana |
| Western Capercaillie | Tetrao urogallus | Tetrao urogallus |
| Western Grebe | Aechmophorus occidentalis | Aechmophorus occidentalis |
| Western Gull | Larus occidentalis | Larus occidentalis |
| Western Kingbird | Tyrannus verticalis | Tyrannus verticalis |
| Western Meadowlark | Sturnella neglecta | Sturnella neglecta |
| Western Rosella | Platycercus icterotis | Platycercus icterotis |
| Western Sandpiper | Calidris mauri | Calidris mauri |
| Western Spinebill | Acanthorhynchus superciliosus | Acanthorhynchus superciliosus |
| Western Tanager | Piranga ludoviciana | Piranga ludoviciana |
| Western Thornbill | Acanthiza inornata | Acanthiza inornata |
| Western Tragopan | Tragopan melanocephalus | Tragopan melanocephalus |
| Western Whipbird | Psophodes nigrogularis | Psophodes nigrogularis |
| Western Wood-Pewee | Contopus sordidulus | Contopus sordidulus |
| Westland Petrel | Procellaria westlandica | Procellaria westlandica |
| Weyns's Weaver | Ploceus weynsi | Ploceus weynsi |
| Whimbrel | Numenius phaeopus | Numenius phaeopus |
| Whinchat | Saxicola rubetra | Saxicola rubetra |
| Whiskered Auklet | Aethia pygmaea | Aethia pygmaea |
| Whiskered Tern | Chlidonias hybrida | Chlidonias hybridus |
| Whiskered Wren | Thryothorus mystacalis | Thryothorus mystacalis |
| Whiskered Yuhina | Yuhina flavicollis | Yuhina flavicollis |
| Whistling Cisticola | Cisticola lateralis | Cisticola lateralis |
| Whistling Heron | Syrigma sibilatrix | Syrigma sibilatrix |
| Whistling Kite | Haliastur sphenurus | Haliastur sphenurus |
| Whistling Warbler | Catharopeza bishopi | Catharopeza bishopi |
| White Bellbird | Procnias alba | Procnias alba |
| White Cockatoo | Cacatua alba | Cacatua alba |
| White Eared-Pheasant | Crossoptilon crossoptilon | Crossoptilon crossoptilon |
| White Hawk | Leucopternis albicollis | Leucopternis albicollis |
| White Ibis | Eudocimus albus | Eudocimus albus |
| White Monjita | Xolmis irupero | Xolmis irupero |
| White Stork | Ciconia ciconia | Ciconia ciconia |
| White Woodpecker | Melanerpes candidus | Melanerpes candidus |
| White-backed Duck | Thalassornis leuconotus | Thalassornis leuconotus |
| White-backed Fire-eye | Pyriglena leuconota | Pyriglena leuconota |
| White-backed Mousebird | Colius colius | Colius colius |
| White-backed Swallow | Cheramoeca leucosternus | Cheramoeca leucosternus |
| White-backed Woodpecker | Picoides leucotos | Dendrocopos leucotos |
| White-banded Mockingbird | Mimus triurus | Mimus triurus |
| White-banded Swallow | Atticora fasciata | Atticora fasciata |
| White-banded Tanager | Neothraupis fasciata | Neothraupis fasciata |
| White-banded Tyrannulet | Mecocerculus stictopterus | Mecocerculus stictopterus |
| White-barred Piculet | Picumnus cirratus | Picumnus cirratus |
| White-bearded Antshrike | Biatas nigropectus | Biatas nigropectus |
| White-bearded Bulbul | Criniger ndussumensis | Criniger ndussumensis |
| White-bearded Flycatcher | Phelpsia inornata | Phelpsia inornata |
| White-bearded Manakin | Manacus manacus | Manacus manacus |
| White-bellied Bushchat | Saxicola gutturalis | Saxicola gutturalis |
| White-bellied Bustard | Eupodotis senegalensis | Eupodotis senegalensis |
| White-bellied Canary | Serinus dorsostriatus | Serinus dorsostriatus |
| White-bellied Chachalaca | Ortalis leucogastra | Ortalis leucogastra |
| White-bellied Cinclodes | Cinclodes palliatus | Cinclodes palliatus |
| White-bellied Dacnis | Dacnis albiventris | Dacnis albiventris |
| White-bellied Drongo | Dicrurus caerulescens | Dicrurus caerulescens |
| White-bellied Emerald | Amazilia candida | Amazilia candida |
| White-bellied Fantail | Rhipidura euryura | Rhipidura euryura |
| White-bellied Hummingbird | Amazilia chionogaster | Amazilia chionogaster |
| White-bellied Kingfisher | Alcedo leucogaster | Alcedo leucogaster |
| White-bellied Nothura | Nothura boraquira | Nothura boraquira |
| White-bellied Piculet | Picumnus spilogaster | Picumnus spilogaster |
| White-bellied Redstart | Hodgsonius phaenicuroides | Hodgsonius phaenicuroides |
| White-bellied Seedeater | Sporophila leucoptera | Sporophila leucoptera |
| White-bellied Shortwing | Brachypteryx major | Brachypteryx major |
| White-bellied Spinetail | Synallaxis propinqua | Synallaxis propinqua |
| White-bellied Warbler | Basileuterus hypoleucus | Basileuterus hypoleucus |
| White-bellied Whistler | Pachycephala leucogastra | Pachycephala leucogastra |
| White-bellied Woodpecker | Dryocopus javensis | Dryocopus javensis |
| White-bellied Woodstar | Acestrura mulsant | Acestrura mulsant |
| White-bellied Wren | Uropsila leucogastra | Uropsila leucogastra |
| White-bibbed Antbird | Myrmeciza loricata | Myrmeciza loricata |
| White-billed Crow | Corvus woodfordi | Corvus woodfordi |
| White-billed Starling | Onychognathus albirostris | Onychognathus albirostris |
| White-breasted Guineafowl | Agelastes meleagrides | Agelastes meleagrides |
| White-breasted Mesite | Mesitornis variegata | Mesitornis variegata |
| White-breasted Nuthatch | Sitta carolinensis | Sitta carolinensis |
| White-breasted Tapaculo | Scytalopus indigoticus | Scytalopus indigoticus |
| White-breasted Whistler | Pachycephala lanioides | Pachycephala lanioides |
| White-breasted White-eye | Zosterops abyssinica | Zosterops abyssinicus |
| White-browed Antbird | Myrmoborus leucophrys | Myrmoborus leucophrys |
| White-browed Babbler | Pomatostomus superciliosus | Pomatostomus superciliosus |
| White-browed Bulbul | Pycnonotus luteolus | Pycnonotus luteolus |
| White-browed Chinese Warbler | Rhopophilus pekinensis | Rhopophilus pekinensis |
| White-browed Conebill | Conirostrum ferrugineiventre | Conirostrum ferrugineiventre |
| White-browed Coucal | Centropus superciliosus | Centropus superciliosus |
| White-browed Crombec | Sylvietta leucophrys | Sylvietta leucophrys |
| White-browed Fantail | Rhipidura aureola | Rhipidura aureola |
| White-browed Foliage-gleaner | Philydor amaurotis | Philydor amaurotis |
| White-browed Fulvetta | Alcippe vinipectus | Alcippe vinipectus |
| White-browed Guan | Penelope jacucaca | Penelope jacucaca |
| White-browed Hawk | Leucopternis kuhli | Leucopternis kuhli |
| White-browed Hermit | Phaethornis stuarti | Phaethornis stuarti |
| White-browed Nuthatch | Sitta victoriae | Sitta victoriae |
| White-browed Piculet | Sasia ochracea | Sasia ochracea |
| White-browed Purpletuft | Iodopleura isabellae | Iodopleura isabellae |
| White-browed Robin | Poecilodryas superciliosa | Poecilodryas superciliosa |
| White-browed Rosefinch | Carpodacus thura | Carpodacus thura |
| White-browed Shama | Copsychus luzoniensis | Copsychus luzoniensis |
| White-browed Tapaculo | Scytalopus superciliaris | Scytalopus superciliaris |
| White-browed Tit | Parus superciliosus | Parus superciliosus |
| White-browed Tit-Spinetail | Leptasthenura xenothorax | Leptasthenura xenothorax |
| White-browed Treecreeper | Climacteris affinis | Climacteris affinis |
| White-browed Triller | Lalage leucomela | Lalage moesta |
| White-browed Warbler | Basileuterus leucoblepharus | Basileuterus leucoblepharus |
| White-capped Dipper | Cinclus leucocephalus | Cinclus leucocephalus |
| White-capped Tanager | Sericossypha albocristata | Sericossypha albocristata |
| White-cheeked Cotinga | Ampelion stresemanni | Zaratornis stresemanni |
| White-cheeked Honeyeater | Phylidonyris nigra | Phylidonyris nigra |
| White-cheeked Nuthatch | Sitta leucopsis | Sitta leucopsis |
| White-cheeked Tern | Sterna repressa | Sterna repressa |
| White-cheeked Tit | Aegithalos leucogenys | Aegithalos leucogenys |
| White-cheeked Turaco | Tauraco leucotis | Tauraco leucotis |
| White-chested Alethe | Alethe fuelleborni | Alethe fuelleborni |
| White-chested Emerald | Amazilia chionopectus | Amazilia chionopectus |
| White-chested Puffbird | Malacoptila fusca | Malacoptila fusca |
| White-chested Swift | Cypseloides lemosi | Cypseloides lemosi |
| White-chested White-eye | Zosterops albogularis | Zosterops albogularis |
| White-chinned Jacamar | Galbula tombacea | Galbula tombacea |
| White-chinned Petrel | Procellaria aequinoctialis | Procellaria aequinoctialis |
| White-chinned Prinia | Prinia leucopogon | Prinia leucopogon |
| White-chinned Sapphire | Hylocharis cyanus | Hylocharis cyanus |
| White-chinned Swift | Cypseloides cryptus | Cypseloides cryptus |
| White-chinned Thistletail | Schizoeaca fuliginosa | Schizoeaca fuliginosa |
| White-chinned Thrush | Turdus aurantius | Turdus aurantius |
| White-chinned Woodcreeper | Dendrocincla merula | Dendrocincla merula |
| White-collared Blackbird | Turdus albocinctus | Turdus albocinctus |
| White-collared Foliage-gleaner | Philydor fuscus | Anabazenops fuscus |
| White-collared Jay | Cyanolyca viridicyana | Cyanolyca viridicyana |
| White-collared Kite | Leptodon forbesi | Leptodon forbesi |
| White-collared Pigeon | Columba albitorques | Columba albitorques |
| White-collared Seedeater | Sporophila torqueola | Sporophila torqueola |
| White-collared Starling | Grafisia torquata | Grafisia torquata |
| White-collared Swift | Streptoprocne zonaris | Streptoprocne zonaris |
| White-collared Yuhina | Yuhina diademata | Yuhina diademata |
| White-crested Coquette | Paphosia adorabilis | Lophornis adorabilis |
| White-crested Elaenia | Elaenia albiceps | Elaenia albiceps |
| White-crested Guan | Penelope pileata | Penelope pileata |
| White-crested Spadebill | Platyrinchus platyrhynchos | Platyrinchus platyrhynchos |
| White-crested Turaco | Tauraco leucolophus | Tauraco leucolophus |
| White-crested Tyrannulet | Serpophaga subcristata | Serpophaga subcristata |
| White-crowned Forktail | Enicurus leschenaulti | Enicurus leschenaulti |
| White-crowned Koel | Caliechthrus leucolophus | Caliechthrus leucolophus |
| White-crowned Manakin | Pipra pipra | Pipra pipra |
| White-crowned Pigeon | Columba leucocephala | Columba leucocephala |
| White-crowned Shrike | Eurocephalus anguitimens | Eurocephalus anguitimens |
| White-crowned Sparrow | Zonotrichia leucophrys | Zonotrichia leucophrys |
| White-crowned Starling | Spreo albicapillus | Spreo albicapillus |
| White-eared Barbet | Smilorhis leucotis | Stactolaema leucotis |
| White-eared Bulbul | Pycnonotus aurigaster | Pycnonotus leucotis |
| White-eared Catbird | Ailuroedus buccoides | Ailuroedus buccoides |
| White-eared Conebill | Conirostrum leucogenys | Conirostrum leucogenys |
| White-eared Hummingbird | Hylocharis leucotis | Hylocharis leucotis |
| White-eared Monarch | Monarcha leucotis | Monarcha leucotis |
| White-eared Puffbird | Nystalus chacuru | Nystalus chacuru |
| White-eared Sibia | Heterophasia auricularis | Heterophasia auricularis |
| White-eared Solitaire | Entomodestes leucotis | Entomodestes leucotis |
| White-edged Oriole | Icterus graceannae | Icterus graceannae |
| White-eyed Antwren | Myrmotherula leucophthalma | Myrmotherula leucophthalma |
| White-eyed Buzzard | Butastur teesa | Butastur teesa |
| White-eyed Foliage-gleaner | Automolus leucophthalmus | Automolus leucophthalmus |
| White-eyed Gull | Larus leucophthalmus | Larus leucophthalmus |
| White-eyed Starling | Aplonis brunneicapilla | Aplonis brunneicapilla |
| White-eyed Thrush | Turdus jamaicensis | Turdus jamaicensis |
| White-eyed Vireo | Vireo griseus | Vireo griseus |
| White-faced Dove | Leptotila megalura | Leptotila megalura |
| White-faced Ibis | Plegadis chihi | Plegadis chihi |
| White-faced Nunbird | Hapaloptila castanea | Hapaloptila castanea |
| White-faced Redstart | Myioborus albifacies | Myioborus albifacies |
| White-faced Robin | Tregellasia leucops | Tregellasia leucops |
| White-flanked Antwren | Myrmotherula axillaris | Myrmotherula axillaris |
| White-fringed Antwren | Formicivora grisea | Formicivora grisea |
| White-fronted Honeyeater | Phylidonyris albifrons | Phylidonyris albifrons |
| White-fronted Manakin | Pipra serena | Pipra serena |
| White-fronted Nunbird | Monasa morphoeus | Monasa morphoeus |
| White-fronted Redstart | Myioborus albifrons | Myioborus albifrons |
| White-fronted Swift | Cypseloides storeri | Cypseloides storeri |
| White-fronted Tern | Sterna striata | Sterna striata |
| White-fronted Tit | Parus semilarvatus | Parus semilarvatus |
| White-fronted Wattle-eye | Platysteira albifrons | Platysteira albifrons |
| White-fronted Woodpecker | Melanerpes cactorum | Melanerpes cactorum |
| White-gaped Honeyeater | Meliphaga unicolor | Lichenostomus unicolor |
| White-headed Barbet | Lybius leucocephalus | Lybius leucocephalus |
| White-headed Duck | Oxyura leucocephala | Oxyura leucocephala |
| White-headed Mousebird | Colius leucocephalus | Colius leucocephalus |
| White-headed Munia | Lonchura leucogastra | Lonchura maja |
| White-headed Petrel | Pterodroma lessonii | Pterodroma lessonii |
| White-headed Pigeon | Columba leucomela | Columba leucomela |
| White-headed Starling | Sturnus erythropygius | Sturnus erythropygius |
| White-headed Vanga | Artamella viridis | Artamella viridis |
| White-headed Vulture | Aegypius occipitalis | Trigonoceps occipitalis |
| White-headed Woodpecker | Picoides albolarvatus | Picoides albolarvatus |
| White-headed Wren | Campylorhynchus albobrunneus | Campylorhynchus albobrunneus |
| White-lined Tanager | Tachyphonus rufus | Tachyphonus rufus |
| White-lored Gnatcatcher | Polioptila albiloris | Polioptila albiloris |
| White-lored Oriole | Oriolus albiloris | Oriolus albiloris |
| White-lored Tyrannulet | Ornithion inerme | Ornithion inerme |
| White-mantled Barbet | Capito hypoleucus | Capito hypoleucus |
| White-naped Friarbird | Philemon albitorques | Philemon albitorques |
| White-naped Honeyeater | Melithreptus lunatus | Melithreptus lunatus |
| White-naped Jay | Cyanocorax cyanopogon | Cyanocorax cyanopogon |
| White-naped Lory | Lorius albidinuchus | Lorius albidinuchus |
| White-naped Monarch | Monarcha pileatus | Monarcha pileatus |
| White-naped Pigeon | Columba albinucha | Columba albinucha |
| White-naped Seedeater | Dolospingus fringilloides | Dolospingus fringilloides |
| White-naped Swift | Streptoprocne semicollaris | Streptoprocne semicollaris |
| White-naped Tit | Parus nuchalis | Parus nuchalis |
| White-naped Xenopsaris | Xenopsaris albinucha | Xenopsaris albinucha |
| White-naped Yuhina | Yuhina bakeri | Yuhina bakeri |
| White-necked Crow | Corvus leucognaphalus | Corvus leucognaphalus |
| White-necked Hawk | Leucopternis lacernulata | Leucopternis lacernulata |
| White-necked Jacobin | Florisuga mellivora | Florisuga mellivora |
| White-necked Petrel | Pterodroma externa | Pterodroma cervicalis |
| White-necked Puffbird | Notharchus macrorhynchos | Notharchus macrorhynchos |
| White-necked Raven | Corvus cryptoleucus | Corvus albicollis |
| White-necked Thrush | Turdus albicollis | Turdus albicollis |
| White-plumed Honeyeater | Meliphaga penicillata | Lichenostomus penicillatus |
| White-ringed Flycatcher | Conopias parva | Conopias albovittata |
| White-ruffed Manakin | Corapipo leucorrhoa | Corapipo altera |
| White-rumped Babbler | Turdoides leucopygius | Turdoides leucopygius |
| White-rumped Hawk | Buteo leucorrhous | Buteo leucorrhous |
| White-rumped Monjita | Xolmis velata | Xolmis velata |
| White-rumped Sandpiper | Calidris fuscicollis | Calidris fuscicollis |
| White-rumped Seedeater | Serinus leucopygius | Serinus leucopygius |
| White-rumped Shama | Copsychus malabaricus | Copsychus malabaricus |
| White-rumped Swallow | Tachycineta leucorrhoa | Tachycineta leucorrhoa |
| White-rumped Swift | Apus caffer | Apus caffer |
| White-rumped Swiftlet | Aerodramus spodiopygius | Collocalia spodiopygius |
| White-rumped Tanager | Cypsnagra hirundinacea | Cypsnagra hirundinacea |
| White-rumped Triller | Lalage leucopygialis | Lalage leucopygialis |
| White-shouldered Antbird | Myrmeciza melanoceps | Myrmeciza melanoceps |
| White-shouldered Antshrike | Thamnophilus aethiops | Thamnophilus aethiops |
| White-shouldered Fire-eye | Pyriglena leucoptera | Pyriglena leucoptera |
| White-shouldered Tanager | Tachyphonus luctuosus | Tachyphonus luctuosus |
| White-sided Hillstar | Oreotrochilus leucopleurus | Oreotrochilus leucopleurus |
| White-spotted Wattle-eye | Platysteira tonsa | Platysteira tonsa |
| White-spotted Woodpecker | Veniliornis spilogaster | Veniliornis spilogaster |
| White-streaked Honeyeater | Lichmera cockerelli | Trichodere cockerelli |
| White-striped Warbler | Basileuterus leucophrys | Basileuterus leucophrys |
| White-striped Woodcreeper | Lepidocolaptes leucogaster | Lepidocolaptes leucogaster |
| White-tailed Cotinga | Xipholena lamellipennis | Xipholena lamellipennis |
| White-tailed Emerald | Elvira chionura | Elvira chionura |
| White-tailed Goldenthroat | Polytmus guainumbi | Polytmus guainumbi |
| White-tailed Hawk | Buteo albicaudatus | Buteo albicaudatus |
| White-tailed Hillstar | Urochroa bougueri | Urochroa bougueri |
| White-tailed Hummingbird | Eupherusa poliocerca | Eupherusa poliocerca |
| White-tailed Jay | Cyanocorax mystacalis | Cyanocorax mystacalis |
| White-tailed Kite | Elanus leucurus | Elanus leucurus |
| White-tailed Nightjar | Caprimulgus cayennensis | Caprimulgus cayennensis |
| White-tailed Nuthatch | Sitta himalayensis | Sitta himalayensis |
| White-tailed Ptarmigan | Lagopus leucurus | Lagopus leucurus |
| White-tailed Sabrewing | Campylopterus ensipennis | Campylopterus ensipennis |
| White-tailed Starfrontlet | Coeligena phalerata | Coeligena phalerata |
| White-tailed Stonechat | Saxicola leucura | Saxicola leucura |
| White-tailed Swallow | Hirundo megaensis | Hirundo megaensis |
| White-tailed Trogon | Trogon viridis | Trogon viridis |
| White-tailed Tyrannulet | Mecocerculus poecilocercus | Mecocerculus poecilocercus |
| White-tailed Warbler | Poliolais lopezi | Poliolais lopezi |
| White-thighed Swallow | Neochelidon tibialis | Neochelidon tibialis |
| White-throated Antpitta | Grallaria albigula | Grallaria albigula |
| White-throated Babbler | Turdoides gularis | Turdoides gularis |
| White-throated Barbtail | Margarornis tatei | Premnoplex tatei |
| White-throated Blue Swallow | Hirundo nigrita | Hirundo nigrita |
| White-throated Cacholote | Pseudoseisura gutturalis | Pseudoseisura gutturalis |
| White-throated Caracara | Phalcoboenus albogularis | Phalcoboenus albogularis |
| White-throated Dipper | Cinclus cinclus | Cinclus cinclus |
| White-throated Earthcreeper | Upucerthia albigula | Upucerthia albigula |
| White-throated Fantail | Rhipidura albicollis | Rhipidura albicollis |
| White-throated Flowerpecker | Dicaeum erythrothorax | Dicaeum vincens |
| White-throated Flycatcher | Empidonax albigularis | Empidonax albigularis |
| White-throated Foliage-gleaner | Automolus roraimae | Automolus roraimae |
| White-throated Francolin | Francolinus albogularis | Francolinus albogularis |
| White-throated Greenbul | Phyllastrephus albigularis | Phyllastrephus albigularis |
| White-throated Hawk | Buteo albigula | Buteo albigula |
| White-throated Honeyeater | Melithreptus albogularis | Melithreptus albogularis |
| White-throated Hummingbird | Leucochloris albicollis | Leucochloris albicollis |
| White-throated Jacamar | Brachygalba albogularis | Brachygalba albogularis |
| White-throated Jay | Cyanolyca mirabilis | Cyanolyca mirabilis |
| White-throated Kingbird | Tyrannus albogularis | Tyrannus albogularis |
| White-throated Kingfisher | Halcyon smyrnensis | Halcyon smyrnensis |
| White-throated Magpie-Jay | Calocitta formosa | Calocitta formosa |
| White-throated Manakin | Corapipo gutturalis | Corapipo gutturalis |
| White-throated Oxylabes | Oxylabes madagascariensis | Oxylabes madagascariensis |
| White-throated Pewee | Contopus albogularis | Contopus albogularis |
| White-throated Rail | Canirallus cuvieri | Dryolimnas cuvieri |
| White-throated Redstart | Phoenicurus schisticeps | Phoenicurus schisticeps |
| White-throated Shrike-Tanager | Lanio leucothorax | Lanio leucothorax |
| White-throated Spadebill | Platyrinchus mystaceus | Platyrinchus mystaceus |
| White-throated Sparrow | Zonotrichia albicollis | Zonotrichia albicollis |
| White-throated Swallow | Hirundo albigularis | Hirundo albigularis |
| White-throated Swift | Aeronautes saxatilis | Aeronautes saxatalis |
| White-throated Tapaculo | Scelorchilus albicollis | Scelorchilus albicollis |
| White-throated Thrush | Turdus assimilis | Turdus assimilis |
| White-throated Tinamou | Tinamus guttatus | Tinamus guttatus |
| White-throated Towhee | Pipilo albicollis | Pipilo albicollis |
| White-throated Treecreeper | Climacteris leucophaea | Cormobates leucophaeus |
| White-throated Treerunner | Pygarrhichas albogularis | Pygarrhichas albogularis |
| White-throated Tyrannulet | Mecocerculus leucophrys | Mecocerculus leucophrys |
| White-throated White-eye | Zosterops meeki | Zosterops meeki |
| White-throated Woodcreeper | Xiphocolaptes albicollis | Xiphocolaptes albicollis |
| White-throated Woodpecker | Piculus leucolaemus | Piculus leucolaemus |
| White-tipped Monarch | Monarcha everetti | Monarcha everetti |
| White-tipped Quetzal | Pharomachrus fulgidus | Pharomachrus fulgidus |
| White-tipped Sicklebill | Eutoxeres aquila | Eutoxeres aquila |
| White-tipped Swift | Aeronautes montivagus | Aeronautes montivagus |
| White-tufted Grebe | Rollandia rolland | Rollandia rolland |
| White-tufted Honeyeater | Lichmera squamata | Lichmera squamata |
| White-tufted Sunbeam | Aglaeactis castelnaudii | Aglaeactis castelnaudii |
| White-vented Euphonia | Euphonia minuta | Euphonia minuta |
| White-vented Plumeleteer | Chalybura buffonii | Chalybura buffonii |
| White-vented Whistler | Pachycephala homeyeri | Pachycephala homeyeri |
| White-wedged Piculet | Picumnus albosquamatus | Picumnus albosquamatus |
| White-whiskered Hermit | Phaethornis yaruqui | Phaethornis yaruqui |
| White-whiskered Puffbird | Malacoptila panamensis | Malacoptila panamensis |
| White-whiskered Spinetail | Synallaxis candei | Synallaxis candei |
| White-winged Apalis | Apalis chariessa | Apalis chariessa |
| White-winged Becard | Pachyramphus polychopterus | Pachyramphus polychopterus |
| White-winged Chough | Corcorax melanorhamphos | Corcorax melanorhamphos |
| White-winged Cinclodes | Cinclodes atacamensis | Cinclodes atacamensis |
| White-winged Coot | Fulica leucoptera | Fulica leucoptera |
| White-winged Cotinga | Xipholena atropurpurea | Xipholena atropurpurea |
| White-winged Crossbill | Loxia leucoptera | Loxia leucoptera |
| White-winged Dove | Zenaida asiatica | Zenaida asiatica |
| White-winged Grosbeak | Coccothraustes carnipes | Mycerobas carnipes |
| White-winged Guan | Penelope albipennis | Penelope albipennis |
| White-winged Lark | Melanocorypha leucoptera | Melanocorypha leucoptera |
| White-winged Nightjar | Caprimulgus candicans | Caprimulgus candicans |
| White-winged Potoo | Nyctibius leucopterus | Nyctibius leucopterus |
| White-winged Seedeater | Serinus leucopterus | Serinus leucopterus |
| White-winged Shrike-Tanager | Lanio versicolor | Lanio versicolor |
| White-winged Swallow | Tachycineta albiventer | Tachycineta albiventer |
| White-winged Tanager | Piranga leucoptera | Piranga leucoptera |
| White-winged Tern | Chlidonias leucoptera | Chlidonias leucopterus |
| White-winged Triller | Lalage sueurii | Lalage tricolor |
| White-winged Warbler | Bradypterus carpalis | Xenoligea montana |
| White-winged Woodpecker | Picoides leucopterus | Dendrocopos leucopterus |
| Whitehead's Spiderhunter | Arachnothera juliae | Arachnothera juliae |
| Whitehead's Swiftlet | Aerodramus whiteheadi | Collocalia whiteheadi |
| Whitehead's Trogon | Harpactes whiteheadi | Harpactes whiteheadi |
| Whooper Swan | Cygnus cygnus | Cygnus cygnus |
| Whooping Crane | Grus americana | Grus americana |
| Whyte's Barbet | Stactolaema whytii | Stactolaema whytii |
| Wilkins's Finch | Nesospiza wilkinsi | Nesospiza wilkinsi |
| Willet | Catoptrophorus semipalmatus | Catoptrophorus semipalmatus |
| Williams's Lark | Mirafra williamsi | Mirafra williamsi |
| Williamson's Sapsucker | Sphyrapicus thyroideus | Sphyrapicus thyroideus |
| Willow Tit | Parus montanus | Parus montanus |
| Willow Warbler | Phylloscopus trochilus | Phylloscopus trochilus |
| Wilson's Phalarope | Phalaropus tricolor | Steganopus tricolor |
| Wilson's Plover | Charadrius wilsonia | Charadrius wilsonia |
| Wilson's Warbler | Wilsonia pusilla | Wilsonia pusilla |
| Winding Cisticola | Cisticola galactotes | Cisticola galactotes |
| Wine-throated Hummingbird | Atthis ellioti | Atthis ellioti |
| Wing-banded Wren | Microcerculus bambla | Microcerculus bambla |
| Wing-snapping Cisticola | Cisticola ayresii | Cisticola ayresii |
| Winter Wren | Troglodytes troglodytes | Troglodytes troglodytes |
| Wire-crested Thorntail | Popelairia popelairii | Popelairia popelairii |
| Wire-tailed Manakin | Pipra filicauda | Pipra filicauda |
| Wire-tailed Swallow | Hirundo smithii | Hirundo smithii |
| Wonga Pigeon | Leucosarcia melanoleuca | Leucosarcia melanoleuca |
| Wood Duck | Aix sponsa | Aix sponsa |
| Wood Lark | Lullula arborea | Lullula arborea |
| Wood Sandpiper | Tringa glareola | Tringa glareola |
| Wood Snipe | Gallinago nemoricola | Gallinago nemoricola |
| Wood Thrush | Hylocichla mustelina | Catharus mustelinus |
| Wood Warbler | Phylloscopus sibilatrix | Phylloscopus sibilatrix |
| Woodchat Shrike | Lanius senator | Lanius senator |
| Woodland Kingfisher | Halcyon senegalensis | Halcyon senegalensis |
| Woodland Pipit | Anthus nyassae | Anthus nyassae |
| Woodpecker Finch | Camarhynchus pallidus | Camarhynchus pallidus |
| Woolly-necked Stork | Ciconia episcopus | Ciconia episcopus |
| Worm-eating Warbler | Helmitheros vermivorus | Helmitheros vermivorus |
| Worthen's Sparrow | Spizella wortheni | Spizella wortheni |
| Wreathed Hornbill | Aceros undulatus | Aceros undulatus |
| Wren-like Rushbird | Phleocryptes melanops | Phleocryptes melanops |
| Wrinkled Hornbill | Aceros corrugatus | Aceros corrugatus |
| Writhed-billed Hornbill | Aceros waldeni | Aceros waldeni |
| Xavier's Greenbul | Phyllastrephus xavieri | Phyllastrephus xavieri |
| Yap Monarch | Monarcha godeffroyi | Monarcha godeffroyi |
| Yapacana Antbird | Myrmeciza disjuncta | Myrmeciza disjuncta |
| Yellow Canary | Serinus flaviventris | Serinus flaviventris |
| Yellow Cardinal | Gubernatrix cristata | Gubernatrix cristata |
| Yellow Chat | Epthianura crocea | Epthianura crocea |
| Yellow Grosbeak | Pheucticus chrysopeplus | Pheucticus chrysopeplus |
| Yellow Honeyeater | Meliphaga flava | Lichenostomus flavus |
| Yellow Longbill | Macrosphenus flavicans | Macrosphenus flavicans |
| Yellow Oriole | Icterus nigrogularis | Icterus nigrogularis |
| Yellow Rail | Coturnicops noveboracensis | Coturnicops noveboracensis |
| Yellow Robin | Eopsaltria australis | Eopsaltria australis |
| Yellow Rosella | Platycercus flaveolus | Platycercus flaveolus |
| Yellow Tyrannulet | Phylloscartes flaveolus | Capsiempis flaveola |
| Yellow Wagtail | Motacilla flava | Motacilla flava |
| Yellow-backed Oriole | Icterus chrysater | Icterus chrysater |
| Yellow-backed Tanager | Hemithraupis flavicollis | Hemithraupis flavicollis |
| Yellow-bearded Bulbul | Criniger olivaceus | Criniger olivaceus |
| Yellow-bellied Dacnis | Dacnis flaviventer | Dacnis flaviventer |
| Yellow-bellied Elaenia | Elaenia flavogaster | Elaenia flavogaster |
| Yellow-bellied Eremomela | Eremomela icteropygialis | Eremomela icteropygialis |
| Yellow-bellied Fantail | Rhipidura hypoxantha | Rhipidura hypoxantha |
| Yellow-bellied Flowerpecker | Dicaeum melanoxanthum | Dicaeum melanoxanthum |
| Yellow-bellied Greenbul | Chlorocichla flaviventris | Chlorocichla flaviventris |
| Yellow-bellied Prinia | Prinia flaviventris | Prinia flaviventris |
| Yellow-bellied Robin | Eopsaltria flaviventris | Eopsaltria flaviventris |
| Yellow-bellied Sapsucker | Sphyrapicus varius | Sphyrapicus varius |
| Yellow-bellied Seedeater | Sporophila nigricollis | Sporophila nigricollis |
| Yellow-bellied Siskin | Carduelis xanthogastra | Carduelis xanthogastra |
| Yellow-bellied Tanager | Tangara xanthogastra | Tangara xanthogastra |
| Yellow-bellied Tit | Parus venustulus | Parus venustulus |
| Yellow-bellied Tyrannulet | Ornithion semiflavum | Ornithion semiflavum |
| Yellow-bellied Wattle-eye | Platysteira concreta | Platysteira concreta |
| Yellow-bellied Whistler | Pachycephala philippinensis | Pachycephala philippinensis |
| Yellow-bibbed Lory | Lorius chlorocercus | Lorius chlorocercus |
| Yellow-billed Barbet | Trachyphonus purpuratus | Trachyphonus purpuratus |
| Yellow-billed Cacique | Cacicus holosericeus | Amblycercus holosericeus |
| Yellow-billed Cardinal | Paroaria capitata | Paroaria capitata |
| Yellow-billed Cotinga | Carpodectes antoniae | Carpodectes antoniae |
| Yellow-billed Cuckoo | Coccyzus americanus | Coccyzus americanus |
| Yellow-billed Jacamar | Galbula albirostris | Galbula albirostris |
| Yellow-billed Magpie | Pica nuttalli | Pica nuttalli |
| Yellow-billed Nunbird | Monasa flavirostris | Monasa flavirostris |
| Yellow-billed Oxpecker | Buphagus africanus | Buphagus africanus |
| Yellow-billed Shrike | Corvinella corvina | Corvinella corvina |
| Yellow-billed Spoonbill | Platalea flavipes | Platalea flavipes |
| Yellow-billed Stork | Mycteria ibis | Mycteria ibis |
| Yellow-breasted Antwren | Herpsilochmus axillaris | Herpsilochmus axillaris |
| Yellow-breasted Barbet | Trachyphonus margaritatus | Trachyphonus margaritatus |
| Yellow-breasted Boubou | Laniarius atroflavus | Laniarius atroflavus |
| Yellow-breasted Bunting | Emberiza aureola | Emberiza aureola |
| Yellow-breasted Chat | Icteria virens | Icteria virens |
| Yellow-breasted Crake | Porzana flaviventer | Porzana flaviventer |
| Yellow-breasted Flycatcher | Tolmomyias flaviventris | Tolmomyias flaviventris |
| Yellow-breasted Pipit | Hemimacronyx chloris | Anthus chloris |
| Yellow-bridled Finch | Melanodera xanthogramma | Melanodera xanthogramma |
| Yellow-browed Antbird | Hypocnemis hypoxantha | Hypocnemis hypoxantha |
| Yellow-browed Bunting | Emberiza chrysophrys | Emberiza chrysophrys |
| Yellow-browed Camaroptera | Camaroptera superciliaris | Camaroptera superciliaris |
| Yellow-browed Oxylabes | Oxylabes xanthophrys | Crossleyia xanthophrys |
| Yellow-browed Sparrow | Myospiza aurifrons | Ammodramus aurifrons |
| Yellow-browed Tit | Sylviparus modestus | Sylviparus modestus |
| Yellow-browed Toucanet | Aulacorhynchus huallagae | Aulacorhynchus huallagae |
| Yellow-browed Tyrant | Satrapa icterophrys | Satrapa icterophrys |
| Yellow-capped Weaver | Ploceus dorsomaculatus | Ploceus dorsomaculatus |
| Yellow-casqued Hornbill | Ceratogymna elata | Ceratogymna elata |
| Yellow-collared Chlorophonia | Chlorophonia flavirostris | Chlorophonia flavirostris |
| Yellow-collared Macaw | Ara auricollis | Ara auricollis |
| Yellow-crested Tanager | Tachyphonus rufiventer | Tachyphonus rufiventer |
| Yellow-crowned Barbet | Megalaima henricii | Megalaima henricii |
| Yellow-crowned Elaenia | Myiopagis flavivertex | Myiopagis flavivertex |
| Yellow-crowned Euphonia | Euphonia luteicapilla | Euphonia luteicapilla |
| Yellow-crowned Redstart | Myioborus flavivertex | Myioborus flavivertex |
| Yellow-crowned Tyrannulet | Tyrannulus elatus | Tyrannulus elatus |
| Yellow-crowned Woodpecker | Picoides mahrattensis | Dendrocopos mahrattensis |
| Yellow-eared Toucanet | Selenidera spectabilis | Selenidera spectabilis |
| Yellow-eared Woodpecker | Veniliornis maculifrons | Veniliornis maculifrons |
| Yellow-eyed Penguin | Megadyptes antipodes | Megadyptes antipodes |
| Yellow-faced Grassquit | Tiaris olivacea | Tiaris olivacea |
| Yellow-faced Parrot | Poicephalus flavifrons | Amazona xanthops |
| Yellow-faced Parrotlet | Forpus xanthops | Forpus xanthops |
| Yellow-faced Redstart | Myioborus pariae | Myioborus pariae |
| Yellow-faced Siskin | Carduelis yarrellii | Carduelis yarrellii |
| Yellow-footed Gull | Larus livens | Larus livens |
| Yellow-footed Honeyguide | Melignomon eisentrauti | Melignomon eisentrauti |
| Yellow-fronted Barbet | Megalaima flavifrons | Megalaima flavifrons |
| Yellow-fronted Canary | Serinus mozambicus | Serinus mozambicus |
| Yellow-fronted Parakeet | Cyanoramphus auriceps | Cyanoramphus auriceps |
| Yellow-fronted Tinkerbird | Pogoniulus chrysoconus | Pogoniulus chrysoconus |
| Yellow-fronted White-eye | Zosterops flavifrons | Zosterops flavifrons |
| Yellow-fronted Woodpecker | Melanerpes flavifrons | Melanerpes flavifrons |
| Yellow-gaped Honeyeater | Meliphaga flavirictus | Meliphaga flavirictus |
| Yellow-green Grosbeak | Caryothraustes canadensis | Caryothraustes canadensis |
| Yellow-green Tyrannulet | Phylloscartes flavovirens | Phylloscartes flavovirens |
| Yellow-green Vireo | Vireo flavoviridis | Vireo flavoviridis |
| Yellow-headed Blackbird | Xanthocephalus xanthocephalus | Xanthocephalus xanthocephalus |
| Yellow-headed Caracara | Milvago chimachima | Milvago chimachima |
| Yellow-headed Manakin | Chloropipo flavicapilla | Chloropipo flavicapilla |
| Yellow-headed Warbler | Teretistris fernandinae | Teretistris fernandinae |
| Yellow-hooded Blackbird | Agelaius icterocephalus | Agelaius icterocephalus |
| Yellow-knobbed Curassow | Crax daubentoni | Crax daubentoni |
| Yellow-legged Gull | Larus cachinnans | Larus cachinnans |
| Yellow-legged Malimbe | Malimbus flavipes | Malimbus flavipes |
| Yellow-legged Pigeon | Columba pallidiceps | Columba pallidiceps |
| Yellow-legged Thrush | Platycichla flavipes | Platycichla flavipes |
| Yellow-legged Tinamou | Crypturellus noctivagus | Crypturellus noctivagus |
| Yellow-mantled Weaver | Ploceus tricolor | Ploceus tricolor |
| Yellow-margined Flycatcher | Tolmomyias assimilis | Tolmomyias assimilis |
| Yellow-necked Greenbul | Chlorocichla falkensteini | Chlorocichla falkensteini |
| Yellow-nosed Albatross | Diomedea chlororhynchos | Diomedea chlororhynchos |
| Yellow-olive Flycatcher | Tolmomyias sulphurescens | Tolmomyias sulphurescens |
| Yellow-rumped Antwren | Terenura sharpei | Terenura sharpei |
| Yellow-rumped Cacique | Cacicus cela | Cacicus cela |
| Yellow-rumped Eremomela | Eremomela gregalis | Eremomela gregalis |
| Yellow-rumped Flycatcher | Ficedula zanthopygia | Ficedula zanthopygia |
| Yellow-rumped Marshbird | Pseudoleistes guirahuro | Pseudoleistes guirahuro |
| Yellow-rumped Siskin | Carduelis uropygialis | Carduelis uropygialis |
| Yellow-rumped Tinkerbird | Pogoniulus bilineatus | Pogoniulus bilineatus |
| Yellow-rumped Warbler | Dendroica coronata | Dendroica coronata |
| Yellow-scarfed Tanager | Iridosornis reinhardti | Iridosornis reinhardti |
| Yellow-shouldered Blackbird | Agelaius xanthomus | Agelaius xanthomus |
| Yellow-shouldered Grassquit | Loxipasser anoxanthus | Loxipasser anoxanthus |
| Yellow-shouldered Grosbeak | Caryothraustes humeralis | Caryothraustes humeralis |
| Yellow-sided Flowerpecker | Dicaeum aureolimbatum | Dicaeum aureolimbatum |
| Yellow-spectacled White-eye | Zosterops wallacei | Zosterops wallacei |
| Yellow-spotted Barbet | Buccanodon duchaillui | Buccanodon duchaillui |
| Yellow-streaked Greenbul | Phyllastrephus flavostriatus | Phyllastrephus flavostriatus |
| Yellow-streaked Lory | Chalcopsitta sintillata | Chalcopsitta sintillata |
| Yellow-tailed Oriole | Icterus mesomelas | Icterus mesomelas |
| Yellow-throated Antwren | Myrmotherula ambigua | Myrmotherula ambigua |
| Yellow-throated Bulbul | Pycnonotus xantholaemus | Pycnonotus xantholaemus |
| Yellow-throated Euphonia | Euphonia hirundinacea | Euphonia hirundinacea |
| Yellow-throated Fulvetta | Alcippe cinerea | Alcippe cinerea |
| Yellow-throated Honeyeater | Meliphaga flavicollis | Lichenostomus flavicollis |
| Yellow-throated Longclaw | Macronyx croceus | Macronyx croceus |
| Yellow-throated Miner | Manorina flavigula | Manorina flavigula |
| Yellow-throated Nicator | Nicator vireo | Nicator vireo |
| Yellow-throated Sandgrouse | Pterocles gutturalis | Pterocles gutturalis |
| Yellow-throated Seedeater | Serinus flavigula | Serinus flavigula |
| Yellow-throated Spadebill | Platyrinchus flavigularis | Platyrinchus flavigularis |
| Yellow-throated Tanager | Iridosornis analis | Iridosornis analis |
| Yellow-throated Tinkerbird | Pogoniulus subsulphureus | Pogoniulus subsulphureus |
| Yellow-throated Vireo | Vireo flavifrons | Vireo flavifrons |
| Yellow-throated Warbler | Dendroica dominica | Dendroica dominica |
| Yellow-throated White-eye | Zosterops metcalfii | Zosterops metcalfii |
| Yellow-throated Woodpecker | Piculus flavigula | Piculus flavigula |
| Yellow-tufted Honeyeater | Meliphaga melanops | Lichenostomus melanops |
| Yellow-vented Bulbul | Pycnonotus goiavier | Pycnonotus goiavier |
| Yellow-vented Eremomela | Eremomela flavicrissalis | Eremomela flavicrissalis |
| Yellow-vented Flowerpecker | Dicaeum chrysorrheum | Dicaeum chrysorrheum |
| Yellow-vented Woodpecker | Veniliornis dignus | Veniliornis dignus |
| Yellow-wattled Bulbul | Pycnonotus urostictus | Pycnonotus urostictus |
| Yellow-wattled Lapwing | Vanellus malabaricus | Vanellus malarbaricus |
| Yellow-whiskered Greenbul | Pycnonotus latirostris | Andropadus latirostris |
| Yellow-winged Blackbird | Agelaius thilius | Agelaius thilius |
| Yellow-winged Cacique | Cacicus melanicterus | Cacicus melanicterus |
| Yellow-winged Tanager | Thraupis abbas | Thraupis abbas |
| Yellowhammer | Emberiza citrinella | Emberiza citrinella |
| Yellowhead | Mohoua ochrocephala | Mohoua ochrocephala |
| Yellowish Flycatcher | Empidonax flavescens | Empidonax flavescens |
| Yellowish Pipit | Anthus lutescens | Anthus lutescens |
| Yemen Serin | Serinus menachensis | Serinus menachensis |
| Yemen Thrush | Turdus menachensis | Turdus menachensis |
| Yucatan Flycatcher | Myiarchus yucatanensis | Myiarchus yucatanensis |
| Yucatan Jay | Cissilopha yucatanica | Cyanocorax yucatanicus |
| Yucatan Poorwill | Otophanes yucatanicus | Nyctiphrynus yucatanicus |
| Yucatan Vireo | Vireo magister | Vireo magister |
| Yucatan Woodpecker | Melanerpes pygmaeus | Melanerpes pygmaeus |
| Yungas Manakin | Chiroxiphia boliviana | Chiroxiphia boliviana |
| Yunnan Nuthatch | Sitta yunnanensis | Sitta yunnanensis |
| Zapata Rail | Cyanolimnas cerverai | Cyanolimnas cerverai |
| Zapata Sparrow | Torreornis inexpectata | Torreornis inexpectata |
| Zapata Wren | Ferminia cerverai | Ferminia cerverai |
| Zebra Dove | Geopelia striata | Geopelia striata |
| Zebra Waxbill | Amandava subflava | Amandava subflava |
| Zenaida Dove | Zenaida aurita | Zenaida aurita |
| Zenker's Honeyguide | Melignomon zenkeri | Melignomon zenkeri |
| Zigzag Heron | Zebrilus undulatus | Zebrilus undulatus |
| Zimmer's Woodcreeper | Xiphorhynchus necopinus | Xiphorhynchus necopinus |
| Zitting Cisticola | Cisticola juncidis | Cisticola juncidis |
| Zone-tailed Hawk | Buteo albonotatus | Buteo albonotatus |